Ultra Dynamics of ship

Waterjet Propulsion Systems

The UltraJet story began in the 1950s with the formation of Dowty Marine when the early Turbocraft jet boat was introduced. In those early days of innovation, Donald Campbell of speed record fame headed up the company,but manufacture of boats was eventually discontinued, leaving the waterjet range as a valuable addition to the Dowty product range, which was eventually sold off to become Ultra Dynamics Limited.

50 YEARS IN WATERJET PROPULSION

The company has been a highly successful innovator and has developed specialist markets for waterjet applications, being the major supplier to the military sector for amphibious vehicles. Both pod units and hull inserted waterjets have been engineered for this sector.

A strong presence has been developed with navies, coastguards and government agencies worldwide, supplying waterjets for pilot boats, rigid inflatables and offshore patrol vessels.

World-Class Waterjets

D

Continual InnovationIn the mid 1990s when the business became an independent company specialising in waterjets, the UltraJet range of high performance waterjets and control systems was introduced. Since introducing the UltraJet range steady progress has been made building up an impressive reference list of successful applications in the commercial workboat and leisure sectors.

Size for size, UltraJets due to their special impeller design pack a stronger punch than any other jet on the market, providing unrivalled thrust and acceleration to cruise speed. Design work undertaken in conjunction with the National Engineering Design Laboratory established a design that delivers both high thrust and high-speed capability. This, together with a commiment to quality in design and manufacture provides a waterjet package of total integrity unsurpassed in the market place.

UltraJet ExpertiseMore than 15,000 UltraJet propulsion systems have been delivered world-wide. UltraJets are well proven for providing high thrust performance, reliability, efficiency and flexibility in a wide range of hull forms. UltraJets can be used in single or multiple configurations in vessels as main propulsion systems, or as boost or loiter propulsion.

Incorporating the latest innovative advances in marine propulsion, UltraJets excell when thrust is required to quickly accelerate the boat to permit getting on plane with a full load, and to maintain planing performance at cruise throttle settings, even in tight turns.

A Commitment to qualityUltra Dynamics manufacturing facilities are dedicated to the production of the highest quality waterjets. The highest quality aluminium and stainless steel foundries ensure the latest resin bonded sand and lost wax techniques are employed to guarantee dimensional accuracy and repeatability. Quality comes from investment in engineering, development and manufacture to ensure that customers get the performance and reliability they need. Ultra Dynamics designs its products to the most precise standards and employs advanced manufacturing facilities to translate those standards into practical reality.

Meeting Craft and Vessel Requirements

UltraJet impeller designs ensure high propulsive coefficients and outstanding resistance to cavitation.

D

Total quality management of key components is maintained by in-house manufacture. Modern, computer controlled CNC machining centres, manned by experienced technicians convert raw materials into precision components.

Components are tested and checked at every stage of the manufacturing process and once the waterjet is assembled it is tested, minimising on site installation requirements.

Around the world our customers count on us for the highest quality marine components and service.

Ultra Dynamics has ISO 9001 certification (since 1994), US GA Listing and other multi national and mil-spec approvals.

High Quality Waterjets

High Speed High Thrust Waterjets

UltraJet Model

Impeller Diameter

mm (inches)

Max Input Power*

Planing Craft bhp (kW)

Max DriveSpeed rpm

Max Slow Speed CraftDisplacement tonnes (lb.)

Max High Speed CraftPlaning

tonnes (lb.)

UJ251 250 (9.8) 300 (224) 3,600 Single jet 8 (17,632)Twin jet 18 (39,672)Triple jet 28 (61,712)

Single jet 4 (8,816)Twin jet 9 (19,836)Triple jet 15 (33,060)

UJ305 305 (12.0) 450 (336) 3,000Single jet 10 (22,040)Twin jet 22 (48,488)Triple jet 35 (77,140)


UJ305HT 340 (13.4) 350 (261) 2,700Single jet 15 (33,060)Twin jet 33 (72,732)Triple jet 55 (121,220)






UJ451 450 (17.7) 1200 (900) 2,100Single jet 32 (70,528)Twin jet 65 (143,260)Triple jet 100 ( 220,400)




*The maximum power ratings of UltraJet waterjets are commensurate with the diesel engine manufacturers’ duty ratings. Maximum power is also influenced by transmission ratio, jet rpm, boat speed, displacement, hull form, and the vessel’s mission. Note: 5o shaft angles are available for many of the above models.

UltraJet waterjets feature high efficiency single-stage axial-flow pump elements with a variety of intake housings and control options. A wide range of impellers match most marine diesel engines from 100 to 1700 bhp (75 kW to 1268 kW) with the appropriate direct drive or reduction gearbox.

UltraJet propulsion systems are rated for real-world operating conditions experienced by most planing and displacement craft.

UltraJets are one of the top three waterjet providers worldwide. More than 15,000 UltraJets are in use on boats and military vehicles.

Proven higher thrust than jets of an equal size across the entire boat speed range

D

UltraJet Dimensional Data

UltraJetModel

Length Width Height Weight

Amm (inch)

Bmm (inch)

Cmm (inch)

Dmm (inch)

Emm (inch)

Fmm (inch)

Gmm (inch)

Drykg (lb.)

UJ251 681(26.8)

640(25.2)

1068(42.0)

568(22.4)

500(19.7)

532(21.0)

250(9.8)

127(280)

UJ305 750(29.5)

784(30.9)

1140(44.9)

694(27.3)

560(22.0)

612(24.1)

265(10.4)

184(406)

UJ305HT 750(29.5)

785(30.9)

1140(44.9)

694(27.3)

600(23.6)

595(23.4)

265(10.4)

205(452)

UJ340 850(33.5)

832(32.7)

1308(51.5)

694(27.3)

598(23.5)

649(25.5)

300(11.8)

250(551)

UJ376 1143(45.0)

841(33.1)

1443(56.8)

815(32.0)

636(25.0)

726(28.6)

330(13.0)

309(680)

UJ451 1375(54.1)

1098(43.2)

1715(67.5)

1050(41.3)

810(31.9)

965(38)

430(16.9)

657(1449)

UJ575 1850(72.8)

1450(57.0)

2380(93.7)

1310(51.6)

1000(39.4)

1268(49.9)

500(19.7)

1450(3196)

Note: All dimensions are approximate depending on exact specification. Please request confirmation of all dimensions prior to finalising an installation design. Dxf drawing are available from our web site www.ultradynamics.com. Note: 5o shaft angles are available for many of the above models.

A Complete Design and System Capability

Ultra Dynamics is a waterjet system supplier. We actively cooperate with all involved parties to ensure the optimum in performance, cost, low maintenance, and best durability for the boat application.

CONTROLLER

FEEDBACK UNIT

JOYSTICK DISTRIBUTION

BOX

TWIN LEVER CONTROL HEAD

MASTERJOYSTICK

SECONDARYAUXILIARYJOYSTICK

PRIMARYAUXILIARYJOYSTICK

D

UltraJet Propulsion for High Thrust

High thrust waterjet propulsion for low to medium speed vessels used in bridging boats, towing and recovering, rescue. etc.

As a result of development in the military market and test boat programmes, UltraJets today, when comparing competitive jets size for size, provide higher thrust at low and medium speeds to allow fast and efficient acceleration to planing speeds as well as improved cruise speeds.

UltraJets’ exceptional thrust in the 0 to 20 knot range has been achieved without compromising the higher speed capability and provides an excellent alternative for both low speed displacement craft and high speed planing boats.

The U.S. Army/Marine Corp chose UltraJets because of the superior static thrust capability of the UltraJet 305, its light weight and because it provided a more

cost effective solution as competitors were being forced to use larger and more expensive waterjets to achieve the same static thrust.

Simply BetterUltraJet Propulsion for High Speed Craft

Waterjet propulsion for high-speed craft used for patrol, custom, port and harbour security, enforcement, pilot, search and rescue, etc. UltraJet propulsion systemsprovide sprint capability plus high thrust at low boat speed (for towing and recovery).

Pod Waterjets for Tracked and Wheeled Amphibious VehiclesMission-specific custom waterjet propulsion systems are designed in house. Pod waterjets for wheeled amphibious armoured fighting vehicles and personnel carriers provide the high thrust necessary for amphibious vehicles to maintain high swimming speeds and directional control when traversing flowing rivers and swimming from craft to beaches.

D

Waterjet Advantages

Successful Systems - Delivering Solutions

UltraJets not only provide high thrust, but also high speeds of over 40 knots.

UltraJets have been developed for the efficient propulsion of a wide range of workboats, SAR, fisheries protection, patrol and Customs, pollution control, rigid inflatables, small passenger, fast landing and leisure craft.

High Thrust and Rapid Acceleration

Suitable for both planing and displacement craft in single or multi-jet installations. Excellent low speed manoeuvrability due to vectored thrust. High thrust at low boat speeds, ideal for towing and recovery operations. High reversing thrust and rapid acceleration without cavitation for craft fitted with a well-matched waterjet.

Excellent Manoeuvrability

The ability to vector a jet pump thrust gives superior control of the craft across the complete speed range. Docking and holding station is much easier. The craft can easily rotate within its own length, or in the case of a twin jet installation can move bodily sideways. Changes in vessel speed and direction can be accomplished quickly. Waterjets can create side forces two to four times greater than boats equipped with propellers and rudders.

Shallow Water Operation

Craft fitted with waterjets can operate in very shallow water and tidal conditions and can be easily beached as the jet intake is flush with the hull bottom.

Ease of Installation - Compact Propulsion Package

UltraJets are supplied as factory tested, compact propulsion packages, with fully integrated control systems mounted on the jet and all cables supplied with durable waterproof connectors for “plug and play” installation.

Increased Efficiency and Fuel Economy

On craft operating above 25 knots the overall efficiency of an UltraJet installation is normally equal to, or better than a comparitive propeller installation. An UltraJet installation that is well matched to the engine and hull will allow the engines to be operated at optimum cruise throttle settings.

Low Drag

Absence of underwater appendages reduces hull resistance as well as risk of impact damage.

Waterjet Advantages

Improved Engine Life

Reduced long term wear and tear on the entire propulsion system. UltraJets are capable of absorbing full engine power regardless of boat speed and cannot overload the engine. A fixed pitch propeller by contrast can only absorb full power at one condition and tends to overspeed, or over torque at other conditions with the consequent loss of power and thrust. This can be very bad for the engine and seriously affect its life.

Total Safety

Greater safety for personnel in the water as the impeller is housed within a casing. UltraJets are ideal for diving and pilot operations, reduce injury or death to marine mammals, and cause less damage to delicate marine eco-systems. Using the reverse deflector the craft can be stopped in very short distances in emergencies.

Secondary Propulsion

UltraJets are an efficient solution for secondary propulsion and can add all the benefits in terms of manoeuvrability and fuel efficiency. UltraJets can also be used to boost acceleration and top speed.

Lower Vibration and Waterborne Noise Improves Onboard Comfort

Absence of vibration and torque effects improves comfort levels on-board, especially important for leisure craft. A smoother ride and less cracking and fatigue in hull superstructures.

Low Maintenance Costs & Easier Servicing

Integral corrosion and wear protection means routine maintenanceinvolving monitoring lubricant levels and checking for anode depletion. If operated in relatively clean water many years of service can be expected from the encased impeller. Revenue producing applications that need to be in service for 2000 hours or more per year benefit from lower operating costs. If required, servicing including impeller change can be carried out without hauling the boat, especially in tidal areas. Work can also be carried out on a beach or rack, that is exposed at low tide.

Minimum Damage Potential/Downtime

Reliability is a priority for working craft. There are no rotating under-water propellers to foul. A jet propelled boat will simply ride over floats and lines attached to lobster and crab pots. It will also ride over floating debris which can destroy a stern drive or propeller, meaning less time spent in drydock on repairs.

Delivering Solutions

D

UltraJet Quality in DesignUltraJets are based on high efficiency axial flow pumps incorporating the latest computer generated impellertechnology. This gives our jets high propulsive coefficients with outstanding resistance to cavitation. Mounted partly inboard at the stern of a vessel UltraJets are supplied as complete compact propulsion packages, control systems are fitted on-jet and all cables have plug and play fittings for ease of installation.

Water is drawn through the intake which is mounted flush with the bottom of the hull. The impeller accelerates the water through the jet to the rear where it is discharged through the outlet nozzle, creating high forward thrust. A steering nozzle directs the flow to port or starboard as directed from the helm, giving maximum turning force.

The split duct reverse deflector redirects the water forward and underneath the boat giving powerful astern thrust. The control system enables positioning of the reverse deflector for “zero speed” and precise vessel control. Safe manoeuvres such as 360o on the spot rotation with a single jet and true sideways movement in multi-jet applications are achievable.

The intake-mounting block simplifies installation. This is fixed to the hull bottom and the UltraJet is then simply bolted to the block and driveline and control system connections made.

Proven ThrustUltraJets have proven they provide more static and mid-range thrust than any other waterjet on the market, when comparing jets size for size. Our jets excel where high bollard pull and exceptional acceleration is a craft requirement and boat speed must not be sacrificed to achieve this. This mid range thrust is also critical on heavily laden craft to ensure that the transition to planing speeds is reliably achieved and to provide fuel-efficient cruise speeds.

Attention to detail in design for installation, product life, maintenance and fail safe mode. Detail so well thought out, our most prestigious competitor has copied these features. Many of the detail design features have now been adopted by other jet manufacturers.

Flexible design philosophies and technological expertise, ensure that products are tailored to customers’ specific requirements. Efficient manufacturing procedures are geared to providing superior quality, prompt delivery and maximum in-service reliability.

Ultra Dynamics has Lloyds ISO 9001 quality registration and many other multi-national quality approvals.

Customer support is provided by Ultra companies and authorised distributors world-wide.

Today, Ultra’s range of waterjets represents 50 years of continuous research, development and product advancement.

Extensive use is made of computer technology in the design, application and performance assessment of each waterjet system.

Compact Propulsion Package

POWER SHOWN IS AT INPUT TO JET

0

5

10

15

20

25

30

35

40

45

0 5 10 15 20 25 30 35 40 45 50CRAFT SPEED (KNOTS)

RESI

STAN

CE

/THR

UST

(kN

)

To determine the anticipated boat speeds, plot the hull resistance curves for the laden and unladen displacements of your boat on this chart. The points at which your resistance curves cross the UltraJet thrust curves will determine the anticipated boat speeds at full and cruise power. The sample resistance curves are provided to illustrate typical resistance curves for hulls with similar shape, displacement and LCG. These curves may not reflect the actual resistance of your hull.

© 2006 Ultra Dynamics Ltd.This document is the property of Ultra Dynamics Ltd. and the information contained herein is confidential. Its contents may not be disclosed, copied or used for any purpose other than that for which it is supplied, without the written authority of Ultra Dynamics Ltd.

ME6498-6

10-JULY-06/MJL

ESTIMATED TOTAL THRUST PERFORMANCE OF A TWIN ULTRAJET 340 INSTALLATION

Boat Specification.Overall length = 13,68 metres

Waterline length = 11,00 metres.Waterline beam = 3,30 metres.

Deadrise at transom = 27 degrees Deadrise at mid-waterline = 27 degrees

L.C.G. = -5%

Thrust from a twin Ultrajet 340 installation at an input power of 540horsepower less 3% for transmission

losses.

Estimated ResistanceCalm Water @ 12 tonnes

displacement.


displacement. Thrust from a twin Ultrajet340 installation at an

input power of 80% MCR less 3% for transmission

losses.


displacement.

UltraJets are supplied as compact propulsion packages, with fully integrated control systems mounted on the jet and all cables supplied with durable waterproof connectors for “plug-and-play” installation. Existing customers have reported that Ultra’s “plug and play” approach has resulted in considerable savings in the time taken for installation and the skill levels required.

Onboard hydraulics, jet driven pump, integrated oil cooler, all interfaces provided for easy connection to the chosen control option.

Control options range from simple push-pull cables to multi-station fully microprocessor managed electro-hydraulic control systems.

www.ultradynamics.com

Performance EvaluationsTo assist in the correct selection of jet model and power arrangement, performance evaluations based on boat specifics (or hull details and engine specification) are provided for every application.

Website dataUltra Dynamics’ web site is a vast soruce of educational information on waterjet propulsion as well as providing downloadable application and technical data on all our waterjet products and control systems.

D

Intelligent Control Systems

UltraJet waterjet control systems put you in total control and

allow you to confidently manoeuvre in any direction –

port/starboard, ahead/astern, diagonally, or rotate - with just

one hand.

The twin duct reverse deflector, in conjunction with the

adjustable steering nozzle, provides excellent low speed

manoeuvrability, especially when docking, in confined

harbours, difficult tide and wind conditions, and emergency/

rescue situations.

A range of steering and reverse control systems are

available, from the most simple system to intelligent

UltraJet joystick control system, providing the ultimate in

vessel manoeuvrability for single, twin and multi-jet systems.

The result of continuous innovation has seen the

introduction of the Jetronic intelligent joystick control

system and JetMaster Joystick, offering unparalleled

manoeuvring power. The PLC (Programmable Logical

Computer) has a specially developed digital network which

converts the joystick commands to boat movements,

harnessing the full benefits of the UltraJets.

The system can also interface with Autopilots.

Easy and logical to use even inexperienced boat users

can operate it, making close quarter manoeuvring simple.

One hand manoeuvring gives you total control of your

boat and the possibility to move in any direction. Docking has been made simple just by moving the joystick in the

direction you want the boat to move to.

As a company with a background in marine, valve and

pump hydraulics we have the flexibility and expertise to

develop customised control packages for specific vessel

requirements.

Application Engineering & Support

Working with designers, builders and end users, Ultra

Dynamics select the most effective UltraJet propulsion

system to deliver optimum propulsive efficiency, taking into

account the characteristics of the hull and engine. Hull

resistance curves and computer speed predictions are

provided.

A flexible design philosophy enables products to be

tailored to customers’ specific requirements. Efficient

manufacturing procedures are geared to providing prompt

delivery, superior quality and maximum-service reliability.

Ultra Dynamics owes its success largely to its ability to

meet the requirements of its customers reliably and at the

right price.

Customer support is provided by Ultra Companies and

authorised distributors world-wide.

Although Ultra Dynamics products carry a standard two

year warranty, nothing is left to chance in the Company’s

customer support arrangements, which provide the best

possible levels of after-sales service.

Service life costs, detailed installation advice, commission-

ing assistance and training programmes are available to

support individual projects.

Training can be provided at our headquarters in Cheltenham,

at our subsidiaries, or on board.

Ultra Dynamics provides a range of support options, from

spare parts to total care packages, tailored to suit

individual customer requirements.

When customers deal with Ultra Dynamics, they do not simply buy a system or component - they receive a total support package which continues for as long as the product remains in service.

Around the world, our customers count on us for the highest quality marine components and service. Like our products, we deliver them.

Marine Engineering Excellence

Ultra Dynamics Marine, LLC1110A Claycraft Road

Columbus, Ohio 43230, U.S.A.Tel: 614-759-9000 Fax: 614-759-9046

E-mail: [email protected]

Ultra Dynamics Limited Upperfield Road,

Kingsditch Trading EstateCheltenham, Glos, GL51 9NY, England.

Tel: +44(0) 1242 707900 Fax: +44(0) 1242 707901 E-mail: [email protected]

www.ultradynamics.com

UD298/3/DTP/1/07 © Ultra Dynamics Ltd. Printed in England

Documents

Ultra Dynamics of ship