Mooring solutionsFebruary2020 Carl Petter Halvorsen

Mooring solutions February 2020

Carl Petter Halvorsen Business Development Director -Renewables

w w w . s c a n a o f f s h o r e . n o

Our history from 1990 to 2019

• 1990 - 2015 main focus on Oil & Gas• 2015 Started working with offshore fish

farming and offshore wind mooring systems• 2018 awarded turret mooring system

contract for Nordlaks offshore fish farm• 2018 awarded spread mooring contract for

Royal Norwegian Salmon• 2018 – 2019 Engineering contract with

Equinor on HyWind Tampen and a Japanese consortium

2019

1990

Floating wind mooring- Mooring analysis- Mooring equipmeny- Offshore installation engineering

APL Fabrication and engineering services of turret systems10 turret systemm supplied

MCG/Hitec MarineFabrication of Bow Loading SystemsDesign and supply of swivels and ball valves

FishfarmingMooring systems- Nordlaks- NRS

Sevan / Petrobras / YinsonScana Offshore supply of Offloading systems andMooring systems


Our markets

Markets:

• Fish farming• Floating

wind• Oil & gas


Turret mooring for APL / NOV (1992-2000)

Engineering and fabrication services:• Turret shaft and mooring components• Turret locking system• Swivels• Assembly and handover of complete buoy

Supplied the 10 first turret systemsClose cooperation with the founders


Nordlaks Havfarm turret mooring system – under construction

Engineering analysis and design:• Mooring system• Turret system• Umbilical system• Offshore installation

Services and hardware• Turret hardware supply and yard installation• Mooring chains and anchors• Umbilical• Offshore installation


Aker / Norway Royal Salmon – Fairlead Chain Stoppers

• 2 off Artic offshore fish farms• 95 mm R4 mooring chain• 18 units to be supplied Desember 2019


Aker Solutions / Norway Royal Salmon – Fairlead Chain Stoppers

• 2 off Artic offshore fish farms 70 meters in diameter

• 95 mm R4 mooring chain• 18 units to be supplied Desember 2019

Start testing 24th November 2019


Fairlead Chain Stoppers


Mid water chain tensioner – Equinor HyWind Tampen example


Equinor HyWind Tampen – mid water chain tensioner

FEED team for mooring and installation:• Equinor• Marine contractor• Scana Offshore

Easy fast installation, reducecost, reduce risk


Submerged Turret – new design – patent applied by Scana Offshore

Market:Large scale wind mill farms.Easy to install and replace units for service.Low cost.No permanent buoyancy.Based on well known oil & gas components

Confidential information not to be disclosed to 3rd party unless approved in writing


Scana Offshore - services for the floating wind industry

Scana Offshore are specialists in mooring equipment and solutions for any permanently moored structure

Through our partners we can perform the following tasks:

• Floater evaluations• Mooring analysis• Anchor evaluations• Mooring equipment

analysis vs installation methods evaluations

• High level cost analysis of floater solutions


Floater analysis evaluations – phase 1Aim: 3rd party evaluation of different floating wind turbine concepts with respect to suitability for the locations they are to be installed.

Typical input:• Number of floaters to be evaluated – floater geometry and data to be supplied by the suppliers of

floating wind mills• Number of locations to be evaluated• Environmental conditions

Software to be used:• Hydrodynamic analysis: SESAM programs• Mooring analysis: Mimosa & Orcaflex• Mooring equipment and illustrations: Inventor

Supplier verification• Communication with the supplier in order to avoid mis-understandings

Typical output:• Comparison of hydrodynamic properties• High level mooring analysis

• Based on current European practice and DNVGL• Based on Class NK with respect to added safety margins

• High level cost estimates of floater concepts based on supplier input, maximizing cost efficiency, possible local content / fabrication. Comparative figures.

• High level cost estimates for mooring system. Comparative figures.


Offshore installation evaluation – phase 2

Aim: 3rd party evaluation of different anchor solutions and offshore installation procedures

Typical input:• Number of locations to be evaluated• Soil data to be evaluated• Available installation vessels

Software to be used:• Soild data: TBD• Installation analysis if required: Orcaflex• Illustrations: Inventor

Typical output:• High level soil evaluation• Anchor evaluation• Outline installation procedures• Comparison between the different floater concepts with respect to complexity, risk and cost


Cefront Technology – floater evaluations and mooring analysisCefront Technology AS

Norwegian company many years of expereince in creating, executing and industrializing new ideas within the maritime and offshore space.

Specialists in:• Floater evaluations• Mooring analysis• Executing new floater concepts and technology:

• APL - turret mooring, now a NOV company• NAVIS – new and uniquie drillship design• Sevan Marine – circular floater for FPSO’s, drilling and floatels• Sealoading – new vessel for offshore oil transfer

• Current new designs under development:• Low cost turret mooring for FPSO’s, FRSU’s and fish farms• Semi floater for fish farming• Compact FPSO / FLNG


Disconnectable turret – 2nd alternative.

This turret systen was designed for low-cost LNG regassification vessels – FSRU’s

The turet system could be implemented on the floating wind mill.

This unit has permanent buoyancy which makes connectin and disconnection quicker


Installation engineering – various partnersMany partners available in NorwayNorwegain company have international experience in offshore installation services. Scana Offshore have worked with several including DOF, Semar, First Associates and others.

Typical topics are:• Size of structure to be moored vs available Anchor

Handler tugs vs environmental conditions• Type of anchors to be installed• Size of mooring lines• Mooring equipment to be used• Outline installation procedure

Installation cost may be a considerable part of the total cost unless analyzed properly. Should be included early in the projects.


Anchors and subsea structuresAnchor selection depends on the seabed conditions, typically these are eavaluated by Norwegian companies such as:• NGI – Norwegian Geotechnical Institute• Reinertsen – Norwegian engineering company• MulticonsultDepending on scope and capacity, this task will be subcontracted.

Anchors are typically divided into the following types depending on the soil seabed conditions:• Gravity base• Suction anchor• Drag anchor• Pile anchor

Drag anchor selection is a doscussion with suppliers such as:• Bruce Anchors• Vryhof

For other solutions, a cooperating company specializing in subsea structures and subsea operations is used:• Nautilus Subsea


Scana Offshore – mooring equipmentNorwegian company cooperating with Cefront Technology’s key personnel since the early 1990’s

Specialists in:• Evaluating equipment requirement vs cost / complexity / operational

requirements• Long track record cost reduction vs actual requirement optimization


Scana Offshore – Mooring Systems

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Mooring solutionsFebruary2020 Carl Petter Halvorsen