The Trailertri 18 is a 18.5ft fractional sloop designed by Ian Farrier and built in plywood since 1974.
The Trailertri 18 is a light sailboat which is a reasonably good performer.
Main features
| Model | Trailertri 18 | ||
| Length | 18.50 ft | ||
| Beam | 14.01 ft | ||
| Draft | 1.18 ft | ||
| Country | ?? | ||
| Estimated price | $ 0 | ?? | 
Ratios
| Sail area / displ. | 17.58 | ||
| Ballast / displ. | 0 % | ||
| Displ. / length | 153.48 | ||
| Comfort ratio | 4.47 | ||
| Capsize | 4.70 | 
Hull
| Hull type | Trimaran Centerboard | ||
| Construction | Plywood | ||
| Waterline length | 17.03 ft | ||
| Maximum draft | 3.74 ft | ||
| Displacement | 1698 lbs | ||
| Ballast | 0 lbs | ||
| Hull speed | 5.53 knots | 
Rigging
| Rigging | Fractional Sloop | ||
| Sail area (100%) | 156 sq.ft | ||
| Air draft | 23 ft | ||
| Sail area fore | 0 sq.ft | ?? | |
| Sail area main | 0 sq.ft | ?? | |
| I | 0 ft | ?? | |
| J | 0 ft | ?? | |
| P | 0 ft | ?? | |
| E | 0 ft | ?? | 
Engine
| Nb engines | 1 | ||
| Total power | 0 HP | ||
| Fuel capacity | 0 gals | 
Accommodations
| Water capacity | 0 gals | ||
| Headroom | 0 ft | ||
| Nb of cabins | 0 | ||
| Nb of berths | 0 | ||
| Nb heads | 0 | 
Builder data
| Builder | ?? | ||
| Designer | Ian Farrier | ||
| First built | 1974 | ||
| Last built | 0 | ?? | |
| Number built | 0 | ?? | 
 
                         
                                                     
                                     
                                         
                                         
                                         
                                         
                                         
                                        