Builder/Designer Builder: Van de Stadt Designer: Van de Stadt
Van de Stadt Trintela 43 Steel
Dimensions LOA: 43 LWL: 34 5 Beam: 12 10
Displacement: 14.5 tons Draft: 6 6
Engines Engine: Perkins Engine model: 92M
Tankage Fuel: 110 gallons in 2 steel in Water: 220 gallons in single int
Construction Hull: Built Stanilands (2) in 4mm B50 rolled steel. Multi-chined hull with long fin and skeg Keel: built in 6mm steel and 12mm steel sole plate with lead ballast Deck: 3mm steel
Accommodations Teak/beech deck flooring Headrom 64 to 70 throughout 5/6 berths, 3 cabins 2 heads Fitted wardrobes Hull ports double glazed with fitted polycarbonate Lavac sea toilets, aft toilet plumbed to holding tank with gauge and macerator pump (2004) Full size chart table Stainless Taylor 040 four burner grill and oven gas cooker Isoterm fridge (2003) Wet locker Airing cupboard
Equipment: Electrical Wind generator: Air marine 24v Solar Panel: Siemens 110w 24v (both fitted on stainless goalpost 2001) Batteries: Six AGM battery bank (2005) Battery Charger: Victron Energie System Phoenix Combie 24v/2000w/50amp battery charger and inverter (Replaced under warranty 2004) Monitor: Xantrec Link 10 battery monitor (2005) Isolator: Galvanic isolator (2004) Shore power: ring main with 11 outlets Smoke detector
Electronics / Navigational VHF: Kelvin Hughes Hasan 70 radio with cockpit speaker Echo Sounder: Incaster Log: Incaster (both with cockpit repeaters) Compasses: Simpson Lawrence Sestral Moore magnetic ST 80 fluxgate (2001) Autopilot: Raytheon 7000 (2001) Wind System: Raytheon 50 (2001) GPS: Leica Mk 10 (2001) Navtex: Navtex Pro Plus (2001) Heaters: Reflex 62M diesel cabin heater with seperate 12g tank and two central heating radiators with circulation pump Greenstar 32l calorifier heater (2003) Paloma gas water heater Water pump: Sensor Max 17 fresh water pump (2005) (All fresh pipes replaced 2004) Fans: 2 x 12v fans (2005)
Deck Winches: Two Lewmar 46 chrome self tailling genoa winches Two Barlow 25 chrome self tailling staysail winches Halyard winches Fenders: Eight fenders Other: 1 x Parachute Sea Anchor (2002) Hatches: 4 x Goiot hatches 4 x Vetus ventilation hatches (2004) 4 x dorade boxes with cowels Vents: 1 x closing ventilight 1 x electric vent above galley
Engine, control, Additional Gearbox: PRM, fitted new in 2003 Propeller: 3 blade fitted new in 2005 along with prop shaft, cutlass bearings and shaft seal Controls: Morse single lever Steering: Whitlock rod steering with 1/4 hp Mamba drive unit, fitted 2000
Spars & Rigging John Powell alloy mast and boom Rotastay roller headsail gear 10mm and 8mm standing rigging, running backstays (Re-rigged 2000) Boom kicker (2001) Whisker pole (2002) Mast steps (2001) Radar reflector (2001)
Sails Main Williams 10 oz with slab reefing Genoa Hood 9 oz Staysail 8 oz Yankee Rockail 8 oz Staypack with sail cover (2001)
Ground Tackle 60 lbs CQR with 60m 10mm chain (Chain new in 2002) 60 lbs Danforth 24v 1500w windlass (2001 new motor fitted 2005) Fortress kedge anchor with chain and reel (2002)
Additional Equipment 96 AB inflatable dinghy (aluminium bottom) whith 15hp Yamaha outboard (2005) Davits fitted to aft goal posts with hoist for engine Honda 1kw generator (2004) Motorola Iridium Satellite phone (2004)
Safety Lifebuoy (2001) Dan buoy (2001) Four fire extinguishers (2002) McMurdo Rescue EPIRB (2001) Manual and automatic bilge pump (2001) Avon 4 man liferaft (2001)
The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.
Classic hull speed formula:
Hull Speed = 1.34 x √LWLA more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL
A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.
SA/D = SA ÷ (D ÷ 64)2/3
A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.
Ballast / Displacement * 100
A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)
This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.
CSV = Beam ÷ ³√(D / 64)
Rig dimensions from sample IMS certificate.
Photo, courtesy of Friends of Trintella.
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