Marine, United Kingdom
Marine, United Kingdom

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Parrott N.,Marine Specialised Technology Ltd. | Freese H.,German Maritime Search and Rescue Service
RINA, Royal Institution of Naval Architects - International Conference on SURV 2013, Surveillance Search and Rescue Craft | Year: 2013

The paper starts with the description of special owners requirements - for an inherent self-righting, stem ramp operated, all weather offshore capable craft with survivor cabin, also for Baltic winter use. The builder describes his approach to the project, technologies employed to assist both from a naval architecture perspective and mechanical engineering point of view. Key topics will include interface with the stem ramp launching system and resolving features plus requirements for collar design and overall craft layout. The owner afterwards reports about stem ramp integration on a relatively small mother vessel and some teething problems and lessons learned. © 2013: The Royal Institution of Naval Architects.


A device for righting a boat or other water vessel following a capsize. The device has an inflatable body which can be stowed in a collapsed state when uninflated. Compressed gas inflates the body following a capsize. The inflatable body has a flexible skin which forms at least first and second inflatable chambers. A valve arrangement causes the chambers to be inflated in a predetermined sequence. The first chamber securely mounts the valve upon the vessel. The second chamber is coupled to the first, supported by the first chamber when the device is deployed. Due to its buoyancy when submerged, the second chamber applies a righting moment to the vessel. The first chamber transmits this moment to the vessel. The staged inflation of the body alleviates its tendency to pop up to the surface before it is adequately inflated.

Marine Specialised Technology Ltd | Date: 2016-03-04

Rigid inflatable boats; boats; rigid buoyancy boats.

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