CTruk CWhisper

Design objectives of CWhisper:

  • Dramatic improvement in comfort for technicians transiting out to the wind farm. Motions will be approximately ¼ those of conventional catamarans
  • Increase in speed in rough seas. The SWATH hull form will allow much higher speeds than conventional catamarans in seas of over 1.0m significant
  • Increase in transfer limit wave heights to 2.0m significant. Tests have shown that the force needed to hold CWhisper against the TP are ¼ those needed for a catamaran.

Using the CTruk Docking Augmentation System (DAS-patent applied for)CWhisper does not need gangway systems. Thus leading to a safer, simpler,faster and more cost effective personnel transfer system. The complex hull design needed to provide the speed and comfort implicit with CWhisper is only possible using resin infusion proven on CTruk’s range of high payload, multipurpose catamarans.

Whilst CWhisper will provide some 50 more operational days for Round 1 and Round 2 wind farms it is also designed with Round 3 in mind.Ctruk envisage that CWhisper will be davit launched from Mother ships to provide cost effective access in all, but the roughest seas.

Main Particulars

Length over all: 19.5m
Beam over all: 7.8m
Draft: 1.48m
Displacement: 30 tonnes
Hull material: Infused composites
Forward deck space: Up to 44m2
Aft deck space: Up to 44m2
Speed: 26 knots
Cruising speed: 23 knots

Classifications

Design Class: DNV 1A1 HSLC R2 Wind Farm Service, MCA Category 2
Flag: UK, Germany, Denmark, Netherlands,Sweden or Norway
Passengers: 12
Crew: 2

Propulsion

Power: 2 x Scania 625 HP, Fixed propellers, Bowthruster assisted
Generator: Beta 11kW
Fuel: 6,000L
Fresh Water: 300L
Invertor: 5kW 240v/110v

Other Equipment

Electronics: Simrad, Dymamic ride control system
Fendering: “Volkorf” Bow (patent applied for)
Life saving equipment: Flag compliance Cat 2
Interior: TV x 2 / DVD / WiFi / DTV, Crew cabin, WC and shower, Changing area, Stretcher facility, Hanging storage, Personalised suspension seating, Air conditioning, Warm air heating
Deck equipment: Moveable wheelhouse, Large volume fuel transfer system, Multiple deck combination, Outside remote helm position, Single handed MOB recovery system, CTruk flexible pod mount system(patent applied for)