| Development | |
|---|---|
| Designer | E. Farnham Butler andCyrus Hamlin |
| Location | United States |
| Year | 1954 |
| No. built | 125 |
| Builder(s) | Mount Desert Yachts Sailstar Boat Company Burr Brothers Boats |
| Role | Racer-Cruiser |
| Name | Amphibi-Con 25 |
| Boat | |
| Displacement | 3,500 lb (1,588 kg) |
| Draft | 4.25 ft (1.30 m) withcenterboard down |
| Hull | |
| Type | monohull |
| Construction | wood strip orfiberglass |
| LOA | 25.42 ft (7.75 m) |
| LWL | 21.67 ft (6.61 m) |
| Beam | 7.75 ft (2.36 m) |
| Engine type | outboard motor |
| Hull appendages | |
| Keel/board type | modified long keel and centerboard |
| Ballast | 1,100 lb (499 kg) |
| Rudder(s) | keel-mountedrudder |
| Rig | |
| Rig type | Bermuda rig |
| I foretriangle height | 24.00 ft (7.32 m) |
| J foretriangle base | 9.50 ft (2.90 m) |
| P mainsail luff | 26.75 ft (8.15 m) |
| E mainsail foot | 12.17 ft (3.71 m) |
| Sails | |
| Sailplan | fractional riggedsloop |
| Mainsail area | 162.77 sq ft (15.122 m2) |
| Jib/genoa area | 114.00 sq ft (10.591 m2) |
| Total sail area | 276.77 sq ft (25.713 m2) |
| Racing | |
| PHRF | 234 |
TheAmphibi-Con 25, often just called theAmphibi-Con, is an Americantrailerablesailboat that was designed byE. Farnham Butler andCyrus Hamlin as aracer-cruiser and first built in 1954. The design was one of the first "trailer sailers" and helped popularize this class of boat.[1][2][3][4]
The design was built by Butler'sMount Desert Yachts,Sailstar Boat Company andBurr Brothers Boats in theUnited States, starting in 1954. Some were also built inFinland. A total of 125 boats were completed, but it is now out of production.[1][4][5][6]
The Amphibi-Con 25 is a recreationalkeelboat, initially built predominantly of glued wooden strip construction. In 1964 the Sailstar Boat Company constructed a mold and built some fromfiberglass, with wood trim and these were sold as kits, semi-finished or ready-to-sail.[1][4]
The boat has afractionalsloop rig, with amasthead sloop rig optional. The hull has araked stem, a plumbtransom,reverse sheer, akeel-mountedrudder controlled by atiller and a fixed longkeel with a cutaway forefoot, plus a retractablecenterboard. The wooden version displaces 3,500 lb (1,588 kg) and carries 1,100 lb (499 kg) of lead ballast, while the fiberglass version displaces 4,000 lb (1,814 kg).[1][4]
The boat has a draft of 4.25 ft (1.30 m) with the centerboard extended and 2.33 ft (0.71 m) with it retracted, allowing ground transportation on atrailer.[1][4]
The boat is normally fitted with a small 6 to 10 hp (4 to 7 kW)outboard motor mounted in an aftlazarette well, for docking and maneuvering. The fuel tank is a portable type, while the fresh water tank has a capacity of 20 U.S. gallons (76 L; 17 imp gal).[1][4]
The design includes a canvas-covered cabin that allows sunshine and fresh air in fine weather or covering in inclement weather. The boat has sleeping accommodation for four people, with a double "V"-berth in the bow cabin and two straight settees in the main cabin. Thegalley is located on both sides, just aft of the forward cabin. The galley is equipped with a two-burner stove on the starboard side and a sink andicebox on the port side. Thehead is located just aft of the bow cabin on the port side. Cabin headroom is 68 in (170 cm).[1][4]
For sailing the design is equipped with atopping lift that runs from a V-shapedboomkin and may also be fitted with aspinnaker for downwind sailing.[4]
The design has aPHRF racing average handicap of 234 and ahull speed of 6.2 kn (11.5 km/h).[4]
The boat is supported by an active class club that organizes racing events, theAmphibi-con Association.[7]
In a 2010 review Steve Henkel wrote, "among her comp[etitor]s, the A/C 25 is the lightest boat with the least ballast and close to the highest SA/D ratio, indicating that she will be among the liveliest in light air, but with her relatively low Motion Index, will tend to be jumpy in a seaway. We recall spending some time on one of these boats with another couple, and we found it to be comfortable, light, and airy."[4]