The Tridarka Raider

A Trimaran for Coastal Vagabonds

Hydrostatics

Vaka At Design Load 650 lb. Total Displacement Vaka Upright, 0 Righting Moment (Picture at anchor in a protected lagoon.)   Vaka Ama Total Displacement: 650 lbs. 0 650 lbs. Wetted Surface*: 33.4 sqft 2 * 1.6 sqft 36.8 sqft Draft: 8.4" 1.2" 8.4" cP: .605     LCB: .534 L

Vaka At Design Load 650 lb. Total Displacement Max Righting Moment, Vaka Lifting (18 degree heel) (Are we having fun yet?)   Vaka Ama Total Displacement: 0 650 lbs. 650 lbs Wetted Surface*: 0 20.4 sqft 20.4 sqft Draft: 0" 14.5" 14.5" cP:   .661   LCB:   .507 L

Vaka At Max Load 1250 lb. Total Displacement Vaka Upright, 0 Righting Moment (At anchor in a protected lagoon with the family.)   Vaka Ama Total Displacement: 1100 lbs. 2 * 75 lbs. 1250 lbs Wetted Surface*: 44.7 sqft 2 * 9.8 sqft 64.3 sqft Draft: 11.7" 5.5" 11.7" cP: .634     LCB: .534 L

Vaka At Max Load 1250 lb. Total Displacement Max Righting Moment, Ama Submerged (20 degree heel) (A bit scary now - might want to reef this sucker?)   Vaka Ama Total Displacement: 237 lbs. 1013 lbs. 1250 lbs Wetted Surface*: 19.8 sqft 56.7 sqft ** 76.5 sqft Draft: 5.1" 22.1" 22.1" cP:   .661   LCB:   .452 L

* Wetted surface of hulls only, excluding rudder and leeboard

** Excluding submerged ama deck and akas