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Ship/Lighter/Platform
Fendering
Problem
Deep Draft Composite Fender
Testing
FY03 Plan
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Existing Fenders
32 x 50 foam filled sausage fenders
Deployed along the waterline of ship
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Problem
Existing fenders not Sea State 3 capable
Fender failure
Interface issues due to differentlighterage configurations
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Deep Draft Composite
Fender
High-strength composite construction
Configured for use with wide range of lighters
Provides 6-foot standoff
Provides low pressure on hull of ship
Deep draft / high inertia stability features
Unsinkable construction
Highway transportable
Design Features
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Deep Draft Composite
Fender
s
Fender units
Composite box
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Deep Draft Composite
Fender
Composite box
Fender units
Cushions
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Composite box
Deep Draft Composite
Fender
Fender units
Cushions Foam flotation blocks
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Composite box
Weight Tray
Deep Draft Composite
Fender
Fender units
Cushions Foam flotation blocks
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Composite box
Weight Tray
Spreader Bar
Deep Draft Composite
Fender
Fender units
Cushions Foam flotation blocks
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Deep Draft Composite
Fender
Principal
Characteristics,
Transport &
Stowed
Length....38
Width....6Height...8
Weight12.3 LT
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Deep Draft Composite
Fender
Principal
Characteristics,
Deployed
Length...17
Width...6
Height18
Draft...13
Weight..15 LT
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Deployment
Deep Draft Composite
Fender
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Lift from stowed position by crane using
spreader bar
Deep Draft Composite
Fender
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Deep Draft Composite
Fender
Lower into water, fenders flood and move
into deployed position
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Deep Draft Composite
Fender
Spreader bar lowered onto top of fender,
securing units together by fitting into slots
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Deep Draft Composite
Fender
Mooring
4 taglines used for deployment & mooring
Water
Line
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Deep Draft Composite
Fender
Testing Practiced Handling & Deployment
Nov-Dec 02 onboard SS Flickertail State
HSV-X1 Joint Venture Demonstration
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Deep Draft Composite
Fender
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Deep Draft Composite
Fender
Lessons Learned: The Good
Lifting and moving fenders
Relatively fast deployment in calm seas
Good stability when deployed
Mooring system allows precise positioning
Easy retrieval and stowage
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Lessons Learned: The Bad
Deep Draft Composite
Fender
Mooring points deemed undersized
Inexperience with deployment procedurescan be a problem
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Lessons Learned: The Ugly
Deep Draft Composite
Fender
Deployment would be
very difficult in higher
sea states
Spreader bar poses
hazard to ships
Spreader barpassively locks
fender in place,
active lock is desired
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Project Plan
DDCF modifications (Feb-Mar)
Deployment Method
At-Sea testing (Apr)
Post test analysis (May-June)
Mooring Points
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MPF study (Feb-May)
Project Plan
Stowage
Mooring
Hull interface
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DDCF redesign (June-Aug)
Incorporate lessons learned & test results
MPF study results
Optimize design for cost & weight
Transition to procurement
Project Plan
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