Neptune 16
Description
The Neptune 16 is a compact, trailerable American daysailer/micro-cruiser built by Capital Yachts Inc. (a division of Lindsey Plastics in Harbor City, California, which also produced Newport/Gloucester models) and designed by renowned naval architect C. William Lapworth (often with input from the yard). Production began in 1981 and continued for a limited period (likely into the mid-1980s, as Capital Yachts operated until the mid-1990s but focused on larger models later), with quantities built not precisely documented but considered moderate for a niche entry-level boat (hundreds estimated based on ongoing used market presence, especially in the US West Coast and Great Lakes regions). It features fiberglass (GRP) construction, a fractional sloop rig for easy handling, a centerboard (keel/centerboard or swing keel) for shallow draft and trailering/beaching, a simple open layout with 2–4 berths (V-berth forward, convertible settees), small cabin for occasional overnights, outboard motor bracket, and a reputation as a nimble, stable, fast-for-size pocket cruiser—praised in reviews (e.g., Small Craft Advisor comparisons to Siren 17) for value, sail area/displacement ratio (quick in light winds), and fun on protected/coastal waters, though basic and entry-level.
Construction Details
| Designer | C. William Lapworth |
|---|---|
| Builder | Capital Yachts (California) |
| Length | 15.750 ft |
| LOA | 15.750 ft |
| LWL | 13.500 ft |
| Beam | 6.170 ft |
| Displacement | 1500 lb |
| Max Draft | 4.000 ft |
| Min Draft | 0.830 ft |
| Year Built | 1981 |
The standard boat dimensions
| i | 15.25 ft |
|---|---|
| j | 5.33 ft |
| p | 18 ft |
| e | 8 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 15.25 ft | 5.33 ft | 18 ft | 8 ft | - | - | - | - |
Sails
Neptune 16 - MAINSAIL
| Luff | * 18 ft - (5486 mm) |
|---|---|
| Foot | * 8 ft - (2438 mm) |
| Leech | * 19.27 ft - (5873 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 19.44 ft - (5925 mm) |
| Head (inches) | * 3.5 in - (89 mm) |
| Area | * 74.25 ft² |
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Neptune 16 - JIBSAIL
| Luff | 14.5 ft - (4420 mm) |
|---|---|
| Foot | 7.42 ft - (2262 mm) |
| Leech | 13.25 ft - (4039 mm) |
| Percentage LP | * 126.45 % |
| Length Perpendicular | * 6.74 ft - (2054 mm) |
| Deck Angle | * 5.38 ° |
| Area | * 48.89 ft² |
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Neptune 16 - JIBSAIL
| Luff | 13.75 ft - (4191 mm) |
|---|---|
| Foot | 7.5 ft - (2286 mm) |
| Leech | 12.58 ft - (3834 mm) |
| Percentage LP | * 127.58 % |
| Length Perpendicular | * 6.8 ft - (2073 mm) |
| Deck Angle | * 5.7 ° |
| Area | * 46.74 ft² |
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Neptune 16 - GENOA
| Luff | * 15.35 ft - (4679 mm) |
|---|---|
| Foot | * 8.93 ft - (2722 mm) |
| Leech | * 12.34 ft - (3761 mm) |
| Percentage LP | * 134.71 % |
| Length Perpendicular | * 7.18 ft - (2188 mm) |
| Deck Angle | * 17.24 ° |
| Area | * 55.09 ft² |
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Neptune 16 - DRIFTER
| Luff | 15.42 ft - (4700 mm) |
|---|---|
| Foot | 10.5 ft - (3200 mm) |
| Leech | 14.5 ft - (4420 mm) |
| Perc LP | * 178.24 % |
| Length Perp | * 9.5 ft - (2896 mm) |
| Deck Angle | * 5.92 ° |
| Area | * 73.26 ft² |
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Neptune 16 - ASYMMETRICAL
| Luff | * 15.35 ft - (4679 mm) |
|---|---|
| Foot | * 8.79 ft - (2679 mm) |
| Leech | * 14.12 ft - (4304 mm) |
| Perc LP | * 165 % |
| Area | * 101 ft² |
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Neptune 16 - ASYMMETRICAL
| Luff | 15.83 ft - (4825 mm) |
|---|---|
| Foot | 9.5 ft - (2896 mm) |
| Leech | 14.083 ft - (4292 mm) |
| Perc LP | * 165 % |
| Area | * 113 ft² |
| Edit in Calculator |
Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.