SunBird 25

Specification

DesignerJ B Brooke MRINA (NZ)
Australian ManufacturersC D and E M Hall (1977 - 1981)
Bolwell Fibreglass (1981 - 1987)
Eddie Scholtens (1987- )
Length Overall7620 mm (25' 0")
Waterline6858 mm (22' 6")
Beam2490 mm (8' 2")
Draught - Plate up510 mm (1' 8")
- Plate down1220 mm (4' 0")
Displacement (minimum)1590 kg (3500 lb)
Ballast In skeg454 kg (1000 lb)
- In hull90 kg (200 lb)
Ballast Ratio35%
Average Towed Mass3000 kg (6610 lb)
Mast- Length8765 mm (28" 9")
- SectionKOD 110 mm X 70 mm
Boom- Length3130 mm (10' 3")
- SectionE 5308 (90 mm X 60 mm)
Rig7/8
Headroom (in cabin)1800 mm (6' 0")
Construction- HullSolid hand laid GRP
- DeckFoam and Timber Sandwich GRP

Sail Plan

SailLuffFootLeechArea
Mainsail7925 mm3048 mm8458 mm13.01 sq m (140 sq ft )
No 1 Genoa7925 mm4877 mm7620 mm18.12 sq m (195 sq ft )
No 2 Genoa7163 mm3734 mm6248 mm12.08 sq m (130 sq ft )
Jib6400 mm 2972 mm5182 mm 8.36 sq m (90 sq ft )
Storm Jib5334 mm2591 mm 3658 mm 5.11 sq m (55 sq ft )
Spinnaker8382 mm5486 mm 8382 mm 50.18 sq m (540 sq ft )

Features

  1. All glass mouldings constructed in excess of Lloyd's requirements.
  2. Lead ballast poured and sealed internally in skeg.
  3. Ballast in skeg does not exert sailing strains on the centreplate or its casing.
  4. Galvanised 12 mm (1/2") steel plate is easily raised by the geared winch mounted under the galley unit.
  5. Yacht has large self-draining cockpit and self rights to AYF and JOG requirements with sails sheeted in and centreboard raised.
  6. Two large cockpit lockers are provided to accommodate loads of gear.
  7. Six full-sized berths are provided - two in the vee berth, two on the settee berth and two on the convertible six-seat dinette.
  8. Well planned galley area including 140 litre (5 cu ft) insulated refrigerator/ice box, gimballed methylated spirit stove, sink with water pump, adequate bench top with chopping board, and plenty of cupboard space.
  9. Most Sunbirds are fitted with a 12 V direct expansion refrigeration unit, dispensing with the need for ice.
  10. 70 litre (15 gallon) flexible type water tank with deck filler.
  11. 55 litre (12 gallon) flexible type fuel tank with deck filler.
  12. Huge, self-draining, covered anchor well in foredeck will accommodate two 9 kg plough anchors, complete with chain and rope.
  13. Permanently installed marine type toilet system.
  14. Enclosed forward cabin.
  15. Yachts produced prior to Sail No 16 were fitted with a Petter 6 HP diesel engine with a variable pitch propellor. Later yachts were fitted with a Volvo Penta MD5B 7.5 HP diesel engine with MSB gearbox and shaft drive or with optional 110S sail drive leg. Both Volvo units were fitted with a folding propellor.
  16. Twin 90 amp-hour battery system with change-over switch.
  17. Swing type aerofoil rudder blade operated by positive locking device.
  18. Efficient, slab-type reefing of mainsail with provision for first and second reefs.
  19. Standing rigging includes forestay, backstay, cap shrouds, lower shrouds and inner forestay all made from 4 mm - 1 X 19 stainless steel wire.
  20. Adjustable backstay and inner forestay.
  21. Centreplate housing completely concealed beneath interior furniture.
  22. Barlow No 16 sheet winches and Barlow No 15 halliard winches.
  23. All halliards are led aft to the cockpit.
  24. Strong, anodised aluminium toe rail strengthens and protects yacht.
  25. Mainsheet traveller mounted on bridge deck at forward end of cockpit - does not cause obstruction to crew work in cockpit.
  26. Huge stowage areas below all bunks, galley unit and cockpit.
  27. Easy to clean full internal liner.
  28. Pushpit, pulpit and lifelines fitted as standard.
  29. Six -12 V cabin lights are fitted.
  30. Comfortable 125 mm bunk cushions.

Trailer

  1. Sunbirds up to Sail No 30 were supplied with a PASS galvanised tandem trailer. Later yachts were fitted with a Brooker 25 TSAT galvanised tandem trailer. Both trailers were fitted with heavy-duty equalising suspension and vacuum over hydraulic disc brakes on the forward axle.
  2. The trailers supplied were fitted with a 12:1 hand winch but an alternative electric winch (eg Powerwinch 912C) makes retrieval a great deal easier.
  3. The manufacturer's specification of the towing vehicle must be adequate for towing the combined mass of the SunBird, its trailer and all the extra gear carried on board. The connection between the trailer and the towing vehicle, including the vehicle towbar, the towball and any load distributing hitch, must have a specified load bearing capacity at least equal to that of the towing vehicle. In addition, the RTA have issued new regulations for braking systems on all trailers carrying loads in excess of two tonnes.