Multihull

Boats that use the system

  • Cruising and racing multihulls, e.g. Orange
  • Shorthanded and single handed racing yachts e.g. B&Q

Yachts in this class require certain specifications

  • The ability to accept speed inputs from each hull and calibrate them differently
  • Functionality to account for mast rotation in wind measurements
  • Facility to correct errors in boat speed linearity at different speeds

Benefits of this system

  • CPU will automatically select the optimum speed sensor based on user choice of wind angle or heel angle
  • Mast rotation sensor adjusts measured wind angle to correct for rotating masts
  • Gyro-stabilised Compass and race-bred Pilot steers multihulls to heading, true wind angle or apparent wind angle

Complimentary hardware and software

  • Deckman software can be used to great effect to call laylines and times to marks when racing at high speed
  • Additional linear inputs can be used to measure daggerboard positions
  • Faster racing multihulls should consider the WTP2 processor for faster and more accurate wind information

Recommended Simrad equipment

  • RS82 VHF
  • HT50 Handheld VHF
  • SA50 SART
  • RA30 Radar

Tips

  • Use RemoteVision to control Pilot and check data when moving around the deck area or whilst sailing shorthanded
  • Use Pilot in true wind mode when sailing fast downwind as the apparent wind tends to vary causing large course variations
  • Calibrate port and starboard boatspeed inputs at low speed by motoring and use the linearity tables in Hercules to correct the over-reading at high speeds
  • Ensure that there is a direct relationship between mast rotation and the sensor such that the sensor and mast rotate at the same rate