Island Packet 29
Island Packet Yachts · designed by Robert K. Johnson · 1981
long keelCutter rigUnited States
The Island Packet 29 is a 29-foot cutter rig sailboat designed by Robert K. Johnson and built by Island Packet Yachts, first launched in 1981.
General
| Builder | Island Packet Yachts |
|---|---|
| Designer | Robert K. Johnson |
| Years built | 1981 |
| Hull type | long keel |
| Rig type | Cutter rig |
| Construction | fiberglass |
| Origin | United States |
Dimensions
| LOA | 29.00 ft8.84 m |
|---|---|
| LWL | 25.58 ft7.80 m |
| Beam | 10.83 ft3.30 m |
| Draft (max) | 4.25 ft1.30 m |
| Displacement | 10,900 lb4,944 kg |
| Ballast | 4,800 lb2,177 kg |
| Sail Area | 491 ft²45.6 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 15.98 Under-canvassed — heavy-air / motorsailing
Ballast / Displacement 44.0 % Higher = stiffer / more sail-carrying power
Displacement / Length 291 Moderate
Comfort Ratio 26.5 Coastal cruiser
Capsize Screening 1.95 Suited to offshore passages (≤ 2.0)
Hull Speed 6.8 kn Theoretical max displacement speed
How these numbers are calculated
- SA / Displacement
SA ÷ (Disp ÷ 64)^(2/3)— Power-to-weight. < 16 under-canvassed, 16–20 cruiser, > 20 racer.- Ballast / Displacement
Ballast ÷ Disp × 100— Stability/stiffness. Higher carries sail better.- Displacement / Length
Disp(lt) ÷ (0.01 · LWL)³— < 100 ultralight, 100–200 light, 200–300 moderate, > 300 heavy.- Comfort Ratio (Brewer)
Disp ÷ (0.65 · (0.7·LWL + 0.3·LOA) · Beam^1.33)— Motion in a seaway. Higher = more comfortable offshore.- Capsize Screening
Beam ÷ (Disp ÷ 64)^(1/3)— ≤ 2.0 favored for offshore; > 2.0 better for coastal use.- Hull Speed
1.34 · √LWL— Theoretical max displacement speed in knots.
Estimated price
$24,000 typical range $19,000 – $29,000
⚠ Rough estimate only — not market data. Derived from a simple model based on length and hull age; actual asking prices vary widely with condition, equipment, engine hours and location.