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DefenReferenDRDC-R
February
Stanand RNetwGear
Michael SField TrialDRDC – A
ce Resence DocumRDDC-2019
y 2019
dard ORecov
works (r
imms Support Serv
Atlantic Resea
earch anment 9-D014
CA
Operatvery of (DUSN
vices arch Centre
nd Deve
CAN U
AN UNCLAS
ing ProDistrib) Node
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CAN UNCLASSIFIED
Template in use: EO Publishing App for SR-RD-EC Eng 2018-12-19_v1.dotm © Her Majesty the Queen in Right of Canada (Department of National Defence), 2019
© Sa Majesté la Reine en droit du Canada (Ministère de la Défense nationale), 2019
CAN UNCLASSIFIED
IMPORTANT INFORMATIVE STATEMENTS
This document was reviewed for Controlled Goods by Defence Research and Development Canada (DRDC) using the Schedule to the Defence Production Act.
Disclaimer: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence ("Canada"), makes no representations or warranties, express or implied, of any kind whatsoever, and assumes no liability for the accuracy, reliability, completeness, currency or usefulness of any information, product, process or material included in this document. Nothing in this document should be interpreted as an endorsement for the specific use of any tool, technique or process examined in it. Any reliance on, or use of, any information, product, process or material included in this document is at the sole risk of the person so using it or relying on it. Canada does not assume any liability in respect of any damages or losses arising out of or in connection with the use of, or reliance on, any information, product, process or material included in this document.
Endorsement statement: This publication has been published by the Editorial Office of Defence Research and Development Canada, an agency of the Department of National Defence of Canada. Inquiries can be sent to: [email protected].
DRDC-RDDC-2019-D014 i
Abstract
As part of the Force Anti-Submarine Warfare (FASW) project, Defence Research and Development Canada (DRDC) had a requirement to deploy a variety of scientific moorings. This Reference Document describes the standard operating procedures developed and implemented for the deployment and recovery of the DRDC Distributed Underwater Sensor Networks (DUSN) nodes and associated small gear during the 2018 field trials.
ii DRDC-RDDC-2019-D014
Résumé
Dans le cadre du projet de lutte anti-sous-marine de la force (FASW), Recherche et développement pour la défense Canada (RDDC) a dû procéder à divers amarrages scientifiques. Ce document de référence énonce les instructions permanentes d’opération élaborées et mises en place en vue du déploiement et de la récupération des nœuds du réseau distribué de capteurs sous-marins de RDDC et du petit matériel connexe au cours des essais sur le terrain en 2018.
DRDC-RDDC-2019-D014 iii
Table of Contents
Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Résumé . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.3 Interferences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.4 Health & Safety Warnings . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.5 Testing & Certification . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Equipment Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 Gateway Buoy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 DUSN Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.3 IcListen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.4 CTD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Deployment & Recovery Procedures . . . . . . . . . . . . . . . . . . . . . . . 7 3.1 DUSN Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1.1 Deployment . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.1.2 Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1.3 Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 DUSN Node & Gateway Buoy . . . . . . . . . . . . . . . . . . . . . . 11 3.2.1 Deployment . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.2.2 Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.2.3 Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Gateway Buoy . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.3.1 Deployment . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.3.2 Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.3.3 Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4 IcListen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.4.1 Deployment . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.4.2 Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.4.3 Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.5 CTD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.5.1 Deployment . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.5.2 Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.5.3 Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
iv DRDC-RDDC-2019-D014
References/Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
DRDC-RDDC-2019-D014 v
List of Figures
Figure 1: Gateway buoy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Figure 2: DUSN node and deployment bridal. . . . . . . . . . . . . . . . . . . . . . 4
Figure 3: icListen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 4: CTD and housing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 5: DUSN node configuration. . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 6: DUSN node mooring. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 7: DUSN node & gateway buoy mooring. . . . . . . . . . . . . . . . . . . . . 13
Figure 8: Gateway buoy mooring. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 9: icListen mooring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 10: CTD mooring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
vi DRDC-RDDC-2019-D014
List of Tables
Table 1: Gateway buoy technical specifications. . . . . . . . . . . . . . . . . . . . . 3
Table 2: DUSN node technical specifications. . . . . . . . . . . . . . . . . . . . . . 4
Table 3: icListen technical specifications. . . . . . . . . . . . . . . . . . . . . . . 5
Table 4: CTD technical specifications. . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 5: Values corresponding to Figure 6. . . . . . . . . . . . . . . . . . . . . . . 11
Table 6: Values corresponding to Figure 7. . . . . . . . . . . . . . . . . . . . . . . 13
Table 7: Values corresponding to Figure 8. . . . . . . . . . . . . . . . . . . . . . . 15
Table 8: Values corresponding to Figure 9. . . . . . . . . . . . . . . . . . . . . . . 17
Table 9: Values corresponding to Figure 10. . . . . . . . . . . . . . . . . . . . . . 19
DRDC-RDDC-2019-D014 vii
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DRDC-RDDC-2019-D014 1
1 Introduction
1.1 Scope
This Reference Document describes the standard operating procedures developed for the deployment and recovery of the Defence Research and Development Canada (DRDC) Distributed Underwater Sensor Networks (DUSN) nodes and small gear used in support of the Force Anti-Submarine Warfare (FASW) project. Procedures for the following equipment will be covered:
DUSN node
DUSN node & gateway buoy
Gateway buoy
Conductivity, Temperature, Depth (CTD)
icListen
These procedures are based on practical experience and were successfully implemented over the course of several field trials taking place in both the Bedford Basin and the Canadian Forces Maritime Experimental Test Ranges (CFMETR).
This Reference Document shall be considered only as a recommendation to the Master, who is ultimately responsible for decisions on the deployment and recovery of equipment.
1.2 Applicability
This Standard Operating Procedure (SOP) is intended for use with a Torpedo & Ship Ranging Vessel (TSRV), but may be applicable to other vessels outfitted with an appropriate crane and deck space. Note that use of a smaller, low-sided vessel with adequate deck space and crane will simplify DUSN recoveries. This will allow recovery via a single vessel, avoiding the need for a simultaneous operation.
1.3 Interferences
Minimum & maximum depth advised for this operation is ± 5 m of the target depth.
Maximum sea state advised for this deployment is 2 (World Meteorological Organization (WMO) Sea State Code)
Maximum sea state advised for this recovery is 2 (WMO Sea State Code)
Maximum wind force advised for this deployment is 15 Knots
Maximum wind force advised for this recovery is 15 Knots
Maximum ship’s speed advised for this operation is 0 Knots
Minimum ship’s speed advised for this operation is 0 Knots
2 DRDC-RDDC-2019-D014
1.4 Health & Safety Warnings All personnel shall:
Conform to Master’s orders at all times.
Bring on board and wear personal protection equipment (hard hats, safety shoes, life jackets).
Never remain under a suspended load during hoisting operations.
Never attempt to stop by hand, movement of loads due to ship rolling motion.
Only essential personnel will be on deck during deployment operations.
Stay clear of hazardous areas if not strictly involved in the operations.
1.5 Testing & Certification
All elements of each scientific system within this SOP have been previously tested.
All lifting bridals and release hooks supplied have been tested and certified in accordance with C-28-020-001/TB-001 Tests of Shipboard Lifting Appliances. This is the standard used for Canadian Forces ships including submarines and auxiliaries.
DRDC-RD
2 E
2.1 G
The gatewa Benthos
2.2
A DUSN outer framsacrificial
DDC-2019-D0
Equipme
Gateway
way buoy is co modem, dua
Item Sensor type Package Package matOverall dime
Maximum wTotal weightAnchor weig
DUSN No
node is comme structure
anchor. It is
014
ent Deta
Buoy
omprised of aal Sub Sea Son
Table 1
erial ensions
working depth excluding an
ght (concrete)
ode
mprised of a Vwith float bointended to b
ils
a surface floanics acoustic
1: Gateway b
DescrAcouCylinPVC,25 in.exclu0 m (s
nchor 55 kg59 kg
Figure 1
Vertical Line ox, benthos
be deployed su
t containing areleases and
uoy technical
ription stic modem a
ndrical Syntactic foa. (diameter) 3ding antenna surface buoy
g, 120 lb g, 130 lb (32 k
1: Gateway bu
Array (VLAmodem, duaubsurface.
an electronicscable moorin
l specification
and data radio
am 33 in. (height)
with varied m
kg, 70 lb in w
uoy.
A), processor al Sub Sea S
s canister andng.
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o
) (64 cm x 84
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water)
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o battery canitic releases, a
3
It has
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4
ItemSenPackPackOveMaxTotaAnc
2.3
The icListbe deploy
m sor type kage kage materialerall dimensioximum workial weight excchor weight (s
icListen
ten is a systemed subsurface
Table
l ons ing depth luding anchosteel)
Figur
m comprised e.
e 2: DUSN no
DescriAcoustCube PVC &40 in. x300 m
r 145 kg59 kg,
re 2: DUSN no
of a hydropho
de technical s
ption tic modem an
& Syntactic fox 40 in. x 33 i
g, 320 lb 130 lb (52 kg
ode and deplo
one, 7.5 m ca
specifications
nd data radio
oam in. (L x W x H
g, 115 lb in w
oyment brida
abling and a b
DRDC-
s.
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RDDC-2019-
m x 0.84 m)
er. It is intend
-D014
ded to
DRDC-RD
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CTD’s arsurface ex
ISPOMA
DDC-2019-D0
Item Sensor type Package Overall dimeMaximum wTotal weight Anchor weig
CTD
e used to logxpression.
Item Sensor type Package Overall dimenMaximum woAnchor weigh
014
Tab
ensions working depth
excluding anght (concrete)
g salinity, co
Ta
nsions (housinorking depth ht (concrete)
ble 3: icListen
DescrBroadCylin1.75 i200 m
nchor 9.09 k59 kg
Figur
onductivity, t
able 4: CTD t
DescripConducCylindr
ng) 1 in. (dVaries 59 kg, 1
n technical sp
ription dband Digitalndrical in. (diameter)
m (max batterykg, 20 lb (in w
g, 130 lb (32 k
re 3: icListen
temperature,
technical spec
ption ctivity (salinitrical housing iameter), 4 in
130 lb (32 kg
pecifications.
l Hydrophone
) 8.6 in (lengtry canister depwater includinkg, 70 lb in w
n.
and depth. T
cifications.
ty), temperatuwith swordfi
n. (long)
g, 70 lb in wat
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water)
Typical deplo
ure, pressure sh clips
ter)
er) nister)
oyments inclu
(depth)
5
ude a
6
Figure 4:
CTD and houusing.
DRDC-RDDC-2019-
-D014
DRDC-RDDC-2019-D014 7
3 Deployment & Recovery Procedures
These procedures have been carefully thought out to reduce risk and determine the safest way possible for successful deployment and recovery of equipment. Deployment and recovery from a ship can be dangerous and good seamanship practises are expected from everyone involved.
All moorings will be deployed from a TSRV and/or workboat. Some of the deployments and most recoveries may require use of multiple vessels simultaneously. Some will require the use of a crane and or capstan, given the weight of the equipment and anchors.
All anchors being deployed are intended to be sacrificial and therefore will not be recovered unless deemed necessary. This will be done by use of Sub Sea Sonics Acoustic Releases. Care should be taken not to shock load these releases during anchor deployment as they are only marginally strong enough for this application. These release units employ electro-chemical erosion to release a tether. The erosion process is not fast. Typical surfacing times are generally 10 to 15 minutes after the release has been triggered, depending on water depth and salinity. It is important for all recovery vessels to maintain a distance of a few hundred metres from the deployed equipment’s coordinates so as to avoid any hull damage from surfacing equipment, yet close enough to spot equipment once at the surface.
During all deployments and recoveries, caution should be exercised in keeping all lines and equipment away from the ship’s propellers.
8
3.1
3.1.1
The deploDUSN noanchor withe DUSNattached tanchor wi
The releashung frombe an Amtop of thelines are c
DUSN No
Deploym
oyment of eaode will be pill be attachedN number andto acoustic rell be tied off
se of the DUSm the ship’s csteel release b
e DUSN bodycrossed.
F
ode
ent
ach DUSN noreloaded with
d via a length d location. Theleases. In theover the side
SN body will rane and posibridal. The fo
y from the ou
Figure 5: DUS
ode will be dh the VLA aof Sampson
he other end oe majority ofof the ship.
be a single poitioned just abour legs of thiutside and com
SN node conf
done from a and all necessbraid moorinof this rope wf the deploym
oint release. Tbove the DUis bridal passme back up o
figuration.
TSRV. In prsary checks wng which will will be attachments, given
To achieve thSN. Also han
s down througon the inside
DRDC-
reparation fowill be madechange in len
hed to the spethe length of
his, a quick-renging from thgh the stainleto the releas
RDDC-2019-
or deploymen. The 130 lbngth dependin
ectra rope whf the mooring
elease hook whe crane hookss steel eyes e hook. Ensu
-D014
nt, the steel ng on
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ure no
DRDC-RDDC-2019-D014 9
The release hook is then snapped shut. Once the hook is armed, it is critical that the individual manning the release line pay close attention and allow plenty of slack to the line to prevent accidental release of the DUSN node. A slip line is to be run around one of the lower frame tubes to steady the load in air.
Commencing the deployment, The TSRV shall position itself far enough up wind of the intended waypoint to allow time to deploy the anchor. It shall be orientated such that the deployment will be done on the windward side of the vessel as this will prevent drifting over top of any lines. Once all manoeuvring has ceased, the crane will lift the DUSN high enough to safely clear the side of the ship and position it over the water. The anchor can then be untied and lowered into the water by its mooring line making use of a capstan or bollard to support the weight. Five metres from the DUSN end of the rope will be a loop. Once this loop has passed to the water side of the capstan or bollard, the load will be transferred to a slip line and removed from the capstan or bollard. The line will slowly be slipped until the full load has been transferred to the DUSN, taking care not to shock load the acoustic releases. This slip line can then be pulled back on deck.
At this point, the Chief Scientist or his delegate on board will confirm that we are at the correct location. The crane will then lower the DUSN until the float is just touching the water and the slip line on the node will be pulled back in. The individual manning the release line will give the line a fast, sharp pull. The DUSN will slip from the bridal, which will remain on the crane hook, upon which the crane can be retracted back to its resting position on deck. The DUSN will begin deploying the array on its way down and at full extension the float will be pulled under the water.
3.1.2 Recovery
Recovery of the DUSN will be done from both a TSRV as well as a low-sided work boat. It will start by sending a signal to the acoustic releases which will release the sacrificial anchor. This will allow both the VLA float as well as the DUSN body to float to the surface.
Once both floats have surfaced, hand retrieval of the system will commence from the work boat and the mooring will be recovered in sequence. First in will be the VLA float, followed by the array. Care must be taken not to damage the nodes or cable on the array as it is coiled on deck. Once the array is recovered and the body is next to the boat, the array will be disconnected and blanking plugs installed, taking care not to get either connector wet. The steel lifting bridle will then be attached to all four lifting eyes on the DUSN.
The crane operator on the TSRV should have the crane standing by to lift the DUSN body out of the water. A tag line can be passed from the TSRV on the hook. For safety, a sling extension with a snap-hook can be added to the crane if required to move the large crane hook further above the workboat. The workboat shall slowly tow the node under the crane in such a way as to prevent the node from moving under the hull. The bridle will then be put on the crane hook, tag line attached and the DUSN can be landed safely back on the deck of the TSRV.
3.1.3 Cautions
When the release hook is closed, ensure it is completely snapped into place.
10
Everyone crane. TheaccidentalIMMEDIAit is safe tback to th
Upon releand sea sta
During rethe boat.
including thee handler of l release. EnsuATELY yell oto do so, caree deck first.
ease of the noate, it may ten
covery, care
e line handlerthe release liure the line dout “Stop!” Refully free th
ode, be awarend to swing o
must be take
r should be sine must be
does not get cRemain clear ohe line withou
e of the location its return to
n not to dam
Figure 6: D
standing clearextremely vig
caught or tangof the suspenut pulling on
ion of the crao position.
mage the DUS
DUSN node m
r of the DUSgilant and pr
gled while thended load unti
it. If require
ane hook. De
SN due to wav
ooring.
DRDC-
SN while it isrovide enoughe DUSN in inil operations hed, the DUSN
epending on w
ves or curren
RDDC-2019-
hanging fromh slack to pr
n the air. If it have paused.
N shall be low
weather cond
nt bumping ag
-D014
m the revent does, Once
wered
ditions
gainst
DRDC-RDDC-2019-D014 11
Table 5: Values corresponding to Figure 6.
DUSN # A (m) B (m) C (m)
3.2 DUSN Node & Gateway Buoy
3.2.1 Deployment
The deployment of the DUSN node and electrical cable will be done by a TSRV. The gateway buoy float will be done after the fact by a workboat.
In preparation for the deployment, the married cable will be flaked out on the deck in figure-eight style bundles. One end will be attached to the DUSN node. The other, attached to a Sampson braid rope and anchor assembly in place of the buoy. Another anchor assembly will be attached near the electrical cable’s midpoint. Both anchors will be positioned near the edge of the ship. The DUSN node will be preloaded with the VLA and all necessary checks will be completed. The DUSN anchor will be attached via a length of Manila rope mooring which will change in length depending on the DUSN number and location. The other end of this rope will be attached to the acoustic releases. In the majority of the deployments, given the length of the mooring, the anchor will be tied off over the side of the ship.
The release of the DUSN body will be a single point release. To achieve this, a quick-release hook will be hung from the ship’s crane and positioned just above the DUSN. Also hanging from the crane hook, will be an Amsteel release bridal. The four legs of this bridal pass down through the stainless steel eyes at the top of the DUSN body from the outside and come back up on the inside to the release hook. Ensure no lines are crossed. A slip line is to be run around one of the lower frame tubes to steady the load in air.
The release hook is then snapped shut. Once the hook is armed, it is critical that the individual manning the release line pay close attention and allow plenty of slack to the line to prevent accidental release of the DUSN node.
Commencing the deployment, The TSRV shall position itself far enough up wind of the intended waypoint to allow time to deploy the anchors. It shall be orientated such that the deployment will be done on the windward side of the vessel to prevent drifting over any lines. Once all manoeuvring has ceased, the crane will lift the DUSN over the side of the ship and position it over the water. The DUSN anchor can then be untied and lowered into the water by its mooring line making use of a capstan or bollard to support the weight. Five meters from the DUSN end of the rope will be a loop. Once this loop has passed to the water side of the capstan or bollard, the load will be transferred to a slip line and removed from the capstan or bollard. The line will slowly be slipped until the full load has been transferred to the DUSN, taking care not to shock load the acoustic releases. This slip line can then be pulled back on deck. At this point, the DUSN node will be lowered just above the water and the crane operator and line handlers will standby.
12 DRDC-RDDC-2019-D014
The anchor attached to the Sampson braid rope will then be deployed by hand, followed by electrical cable until the second anchor is deployed. The mid-point anchor should be deployed at the gateway buoys intended waypoint. As the remaining cable is paid out, the DUSN slip line will be pulled free. Once all cables are clear of the ship, the individual manning the release line will give it a fast, sharp pull. The DUSN will slip from the bridal, which will remain on the crane hook, upon which the crane can be retracted back to its resting position on deck. The DUSN will begin deploying the array on its way down and full extension the float will be pulled under the water.
Post-deployment, the work boat will bring out the gateway buoy. The anchor on the Sampson braid line will be released, bringing the electrical connector back to the surface. This line will be removed and the buoy connected. The buoy will then be deployed by over the side of the boat and placed upright, in the water. If available, a crane or davit can aid with this however, previously it has been accomplished manually with two people.
3.2.2 Recovery
Recovery of the DUSN will be done from both a TSRV as well as a work boat. It will start by sending a signal to both the acoustic releases of the DUSN and gateway which will release the sacrificial anchors. This will allow both the VLA float as well as the DUSN body to float to the surface.
Hand retrieval of the system will then commence from the work boat once both DUSN floats have come to the surface. First, the gateway buoy is lifted onto the boat, being careful not to damage the antenna. Again, if available, a crane or davit can aid with this however, previously it has been accomplished manually with two people. The married cable, buoy and releases are then recovered by hand and coiled neatly on deck. Once the DUSN is reached, it will be disconnected from the married electrical cable and blanking plugs installed.
Next to be recovered will be the array. Care must be taken not to damage the nodes or cable on the array as it is coiled on deck. Once the array is recovered and the body is next to the boat, the steel lifting bridle will then be attached to all four lifting eyes on the DUSN.
The crane operator on the TSRV should have the crane standing by to lift the DUSN body out of the water. A tag line can be passed from the TSRV on the hook. For safety, a sling extension with a snap-hook can be added to the crane if required to move the large crane hook further above the workboat. The workboat shall slowly tow the node under the crane in such a way as to prevent the node from moving under the hull. The bridle will then be put on the crane hook, tag line attached and the DUSN can be landed safely back on the deck of the TSRV.
3.2.3 Cautions
When the release hook is closed, ensure it is completely snapped into place.
Everyone including the line handler should be standing clear of the DUSN while it is hanging from the crane. The handler of the release line must be extremely vigilant and there must be enough slack to prevent accidentally pulling the release pin. Ensure the line does not get caught or tangled while the DUSN in in the air. If it does, IMMEDIATELY yell out “Stop!” Remain clear of the suspended load until operations have paused. Once it is safe to do so, carefully free the line without pulling on it. If possible, the DUSN shall be lowered back to the deck first.
DRDC-RD
Caution shthe electrideployed.
Caution shshould thhandlers. E
3.3 G
3.3.1
The gatewto deploy
DDC-2019-D0
hould be takeical connecto
hould be takee married caEnsure that at
DUSN #
Gateway
Deploym
way buoy willment, the ele
014
en when placior on top of
en when payinable come taut no point is a
Figure
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# A (m)
Buoy
ent
l be a fairly loectrical cable
ing the gatewthe float in t
ng out cable aught. This wanyone standi
7: DUSN nod
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B (m) C (
ow risk, hande and Samps
way buoy in anthe water. En
as the boat puwill take cleaing in the bite
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corresponding
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d deployment,on braid mo
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a work boat. atly on deck
13
nna or when
edure d line
Prior . The
14 DRDC-RDDC-2019-D014
modem, acoustic release and anchor will all be connected. The anchor will be set next to the edge of the work boat, in preparation for deployment.
Beginning the deployment, the work boat shall position itself upwind of the intended waypoint with the deployment occurring on the windward side of the boat. The gateway buoy will be lifted over the side of the boat and placed upright, in the water. If available, a crane or davit can aid with this however, previously it has been accomplished manually with two people.
Once the buoy is in the water, the boat will drift away toward the waypoint as the electrical cable is paid out by hand. When the modem is reached, it will then be carefully lowered into the water and the mooring will continue to be paid out past the subsurface float, until the acoustic releases can be carefully lowered over the side into the water.
At this point, the Chief Scientist or his delegate on board will confirm that we are at the correct location. Once the order is given, the anchor will be pushed off the boat ensuring that it doesn’t land on the releases and coordinates marked. Watch for the buoy as it will then be drawn towards the boat as the anchor sinks.
3.3.2 Recovery
Recovery of the gateway buoy can be done from a work boat. It will start by sending a signal to the acoustic releases which will release the sacrificial anchor. This will allow the subsurface float to come to the surface.
Once spotted, hand retrieval of the system will commence in the same order it was deployed. First, the gateway buoy is lifted onto the boat, being careful not to damage the antenna. Again, if available, a crane or davit can aid with this however, previously it has been accomplished manually with two people. The remaining cable, modem, rope, buoy and releases are then recovered by hand and coiled neatly on deck.
3.3.3 Cautions
Caution should be taken when placing the gateway buoy in and out of the water not to dip the antenna or the electrical connector on top of the float in the water. Ensure that the buoy is placed upright when deployed.
DRDC-RD
3.4
3.4.1
The icListdeploymebattery cathe boat in
DDC-2019-D0
icListen
Deploym
ten will be a nt, Sampson
an, acoustic ren preparation
014
Tabl
B
ent
fairly low ribraid moori
elease and anfor deployme
Figure 8: Ga
le 7: Values c
uoy # A (m
isk, hand depings will be
nchor will all ent.
ateway buoy m
corresponding
m) B (m)
ployment, whicoiled neatlybe connected
mooring.
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d. The anchor
one from a wThe subsurfar will be set n
work boat. Prace float, icLnext to the ed
15
ior to Listen, dge of
16 DRDC-RDDC-2019-D014
Beginning the deployment, the work boat shall position itself upwind of the intended waypoint with the deployment occurring on the windward side of the boat. The icListen float will be lowered into the water over the side of the boat. Once the float is in the water the boat will drift away toward the waypoint as the mooring is paid out by hand. The mooring will continue to be paid out until the acoustic releases are reached. They will be lowered over the side into the water using the 1 m of steel wire and Sampson braid attached to the anchor.
At this point, the Chief Scientist or his delegate on board will confirm that we are at the correct location. Once the order is given, the anchor will be released, ensuring that it doesn’t land on the releases and coordinates marked.
3.4.2 Recovery
Recovery of the icListen can be done from a work boat. It will start by sending a signal to the acoustic releases which will release the sacrificial anchor. This will allow the subsurface float to come to the surface.
Once it is spotted, the hand retrieval of the system will then commence in the same order it was deployed. First, the icListen float is lifted onto the boat. The Sampson braid mooring is then coiled neatly on deck and lastly, the acoustic releases.
3.4.3 Cautions
Caution should be taken when recovering the icListen not to damage it against the side of the boat.
When recovering battery can, ensure that you are pulling up on the Sampson braid rope and not on the electrical cable.
DRDC-RD
3.5 C
3.5.1
The CTDdeploymeanchor wianchor wi
Beginningdeploymethe water out by ha
DDC-2019-D0
CTD
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g the deploymnt occurring oover the sidend. As the m
014
Tabl
icL
ent
rly low risk, son braid monected. All Cto the edge o
ment, the woron the windwe of the boat.
mooring is pai
Figure 9:
le 8: Values c
Listen # A (
hand deployooring will beCTD’s will beof the boat in p
rk boat shall pward side of th
Next, the boid out, CTD
icListen moo
corresponding
(m) B (m)
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position itselfhe boat. The soat will drift tloggers will
oring.
g to Figure 9.
) C (m)
h can be donly on deck. Turing deploymfor deploymen
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the intended and flasher w
waypoint as that previously
ork boat. Pricoustic releaswordfish clips
waypoint witwill be loweredhe mooring isy marked loca
17
ior to e and
s. The
th the d into s paid ations
18 DRDC-RDDC-2019-D014
along the mooring via swordfish clips and serial numbers will be recorded in order. Once all loggers have been deployed and the end of the line is reached, the acoustic releases can be carefully lowered into the water.
At this point, the Chief Scientist or his delegate on board will confirm that we are at the correct location. Once the order is given, the anchor will be carefully released and coordinates marked.
3.5.2 Recovery
Recovery of CTD’s can be done from a work boat. It will start by sending a signal to the acoustic releases which will release the sacrificial anchor. This will allow the subsurface float to come to the surface.
Once it is spotted, the hand retrieval of the system will then commence in the same order it was deployed. First, the acoustic releases are lifted onto the boat. The entire mooring is then coiled neatly on deck. The CTD loggers will be removed after the fact.
3.5.3 Cautions
Caution should be taken when attaching the swordfish clips to the line. Ensure they are snug before releasing to prevent accidental loss.
DRDC-RD
DDC-2019-D0014
Table
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Figure 1
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CTD # A
0: CTD moor
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(m) B (m)
ring.
g to Figure 10
) C (m)
0.
19
20 DRDC-RDDC-2019-D014
References/Bibliography
Department of National Defence Canada. C-28-020-001/TB-001 In-Service Certification Requirements for Shipboard Lifting Appliances. (2011-09-01)
icListen Smart Hydrophones | Ocean Sonics. Retrieved from http://oceansonics.com/iclisten-smart-hydrophones/. (Access date: 2017-04-20)
Salinity Logger Measuring Device. Retrieved from https://www.star-oddi.com/products/data-loggers/salinity-logger-probe-CTD. (Access date: 2017-04-20)
Sub Sea Sonics. Retrieved from http://subseasonics.com/. (Access date: 2017-04-20)
DOCUMENT CONTROL DATA *Security markings for the title, authors, abstract and keywords must be entered when the document is sensitive
1. ORIGINATOR (Name and address of the organization preparing the document. A DRDC Centre sponsoring a contractor's report, or tasking agency, is entered in Section 8.)
DRDC – Atlantic Research Centre Defence Research and Development Canada 9 Grove Street P.O. Box 1012 Dartmouth, Nova Scotia B2Y 3Z7 Canada
2a. SECURITY MARKING (Overall security marking of the document including special supplemental markings if applicable.)
CAN UNCLASSIFIED
2b. CONTROLLED GOODS
NON-CONTROLLED GOODS DMC A
3. TITLE (The document title and sub-title as indicated on the title page.)
Standard Operating Procedures for Deployment and Recovery of Distributed Underwater Sensor Networks (DUSN) Nodes and Associated Small Gear
4. AUTHORS (Last name, followed by initials – ranks, titles, etc., not to be used)
Simms, M.; Services, F. T. S.
5. DATE OF PUBLICATION (Month and year of publication of document.)
February 2019
6a. NO. OF PAGES (Total pages, including Annexes, excluding DCD, covering and verso pages.)
29
6b. NO. OF REFS (Total references cited.)
4
7. DOCUMENT CATEGORY (e.g., Scientific Report, Contract Report, Scientific Letter.)
Reference Document
8. SPONSORING CENTRE (The name and address of the department project office or laboratory sponsoring the research and development.)
DRDC – Atlantic Research Centre Defence Research and Development Canada 9 Grove Street P.O. Box 1012 Dartmouth, Nova Scotia B2Y 3Z7 Canada
9a. PROJECT OR GRANT NO. (If appropriate, the applicable research and development project or grant number under which the document was written. Please specify whether project or grant.)
01ca - Force Anti-Submarine Warfare
9b. CONTRACT NO. (If appropriate, the applicable number under which the document was written.)
10a. DRDC PUBLICATION NUMBER (The official document number by which the document is identified by the originating activity. This number must be unique to this document.)
DRDC-RDDC-2019-D014
10b. OTHER DOCUMENT NO(s). (Any other numbers which may be assigned this document either by the originator or by the sponsor.)
99ab
11a. FUTURE DISTRIBUTION WITHIN CANADA (Approval for further dissemination of the document. Security classification must also be considered.)
Public release
11b. FUTURE DISTRIBUTION OUTSIDE CANADA (Approval for further dissemination of the document. Security classification must also be considered.)
12. KEYWORDS, DESCRIPTORS or IDENTIFIERS (Use semi-colon as a delimiter.)
Acoustique; Deployment; Recovery; Iclisten; Gateway buoy; Distributed underwater sensor network; Communication sous-marine; Systèmes autonomes; Mooring system; SOP; Subsurface; Single point release; Release hook
13. ABSTRACT (When available in the document, the French version of the abstract must be included here.)