Coral Sea 25 by Mike Waller Yacht Design

25 ft plywood 'V' hull low cost cruising catamaran

Length overall25' 7"7.79 m
Waterline length21' 8"6.6 m
Beam15' 9"4.8 m
Draft1' 9"0.53 m
Weight1984 lbs900 kg
Displacement2535 lbs1150 kg
Capacity1102 lbs500 kg
Sail area406 sq. ft.37.72 m2
Hull construction Plywood
See also Coral Sea 35



The CORAL SEA 25 CATAMARAN is designed specifically for the builder who wants the maximum boat for minimum cost and building time. To this end the vessel features seperate hulls connected by strongly mounted cross beams.

The vessel is demountable for trailing and employs a simple, easily built, trunkated 'V' hull shape. The trunkated 'V', is as simple to build as the straight 'V', but has better sailing characteristics, such as less wetted surface, better tacking etc. This yacht is definitely a case of the most boat for the least work and cost.

The Coral Sea 25 is designed for safe, comfortable family sailing, with bunks for 4 in 2 seperate hulls. It also has a room for a portable toilet, small cabin lockers, and a huge cockpit for socializing. There is good sitting headroom in the hulls.

For simplicity and ease of construction the hulls consist of a plywood shell wrapped around a framework of plywood bulkheads and timber stringers. This is still the easiest way to construct a timber boat, and when combined with timber / epoxy construction, is a very cost effective way to build a sound vessel.

The rig is a simple but efficient ¾ sloop, with a large sail area for light weather cruising, easily reefed in heavier winds. The rigidly mounted beams allow the vessel to carry an efficent rig which can stand up to the weather. The rigging is as simple as possible, and is based on the KISS principle. Two separate rigs are available, a standard rig for offshore and open water sailing, and a larger inshore rig. The choice is at the builders discretion.

Auxiliary power is from an outboard in a separate pod beneath the cockpit footwell. The vessel features small skeg keels for cruising simplicity, and efficient transom hung rudders for positive helm control. Steering as designed is by tiller. The Coral Sea 25 is an easily constructed vessel capable of providing it's owners with years of comfortable and fun cruising, or even ocean voyages for the more skillful and adventurous sailors.

Coral Sea 25


See also

Design Length Beam Sail area Engine power Compare
Coral Sea 35 Coral Sea 35 by Mike Waller Yacht Design
(35 ft plywood 'V' hull low cost cruising catamaran
35' 2"
10.72 m
20' 9"
6.32 m
611 sq. ft.
56.80 m2

Catamarans about same size as Coral Sea 25

Merlin   Merlin
A compromise between Gwahir and Strider

LOA: 25'/7.65 m   compare
Sango   Sango
Folding trailable cat with central cuddy. 7.65m version of Wizard

LOA: 25' 3"/7.7 m   compare
8.3m deep V cruiser

LOA: 27' 7"/8.4 m   compare
Gypsy   Gypsy
Budget Offshore Cruiser with central cuddy

LOA: 28'/8.5 m   compare

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