Safehaven Marine

Construction and hull design

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The vessel is constructed from advanced lightweight FRP cored composites. XSV 17 has an innovative and unique hull form that allows it to operate in two distinct modes, fully planing and wavepiercing. The hull design hull design combines a constant deadrise deep  V hull form incorporating twin chines capable of 60kts with a wavepiercing bow form. A 24 degree deadrise at the transom transitions to a wave piercing bow, with a super fine wave cutting waterline entry designed to run clear of the water at very high speeds, but which can be bought into dramatic effect with adjustable trim control to very effectively minimizes vertical accelerations at speed in waves, thereby maximizing crew endurance.

The hull provides exceptionally high levels of seakeeping abilities on all courses with its twin chine arrangements providing for high levels of both static and dynamic stability. The design is fully self-righting, capable of recovering after capsize by a large breaking sea and is survivable up to sea state 8, capable of operating effectively in up to sea state 6, and maintain operational speed in sea state 3-4. A unique feature is the bow buoyancy control fins used to increase buoyancy in following seas preventing excessive submersion, the fins are adjustable for wave height and craft speed.

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Thunder Child is fitted with a full array of navigation equipment including HD Radar, VHF radio communications, AIS, and GPS systems displayed on three 15" colour monitors at the helm and navigators station, all supplied by Garmin. FLIR Thermal /night vision infrared camera systems are fitted for night time passage as well as a four zone CCTV covering engine room and external views all displayed at the helm. Dedicated engineers position with dual controls and 15% Cat touchscreen engine monitoring display. The vessel is built to the UK's MCA Cat II commercial work boat regulations.