The Manta 16 is moderately powered for comfortable coastal cruising, with a quick, snappy motion best suited to day sailing.
Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 13.6′, the Manta 16 tops out around 5.0 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √13.6′ LWL = 4.9 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
SA / Displacement
14.9
Moderate sail power — a capable coastal cruiser, not overpowered.
Comfort Ratio
15.1
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
2.01
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Pounds/Inch Immersion
272lbs
Weight needed to sink the hull one inch — loading sensitivity.
Motion & Offshore Suitability
Two ratios that matter most when you're planning passages — how the boat feels in a seaway, and whether the hull geometry is suitable for open ocean.
Comfort Ratio
15.1
Quick, snappy motion — better for day sails and racing than long passages.
Under 20 — Snappy, racing motion
20–30 — Acceptable coastal
30–40 — Good offshore comfort
Over 40 — Very comfortable offshore
Capsize Screening Formula
2.01
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Under 2.0 — Acceptable for offshore
Over 2.0 — Coastal / protected waters
PHRF Fleet Position
Where the Manta 16 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Racer 0–90
Cruiser/Racer 90–150
Cruiser 150–210
Heavy Cruiser 210–300
Estimated Speed by Wind
Rough boat speed estimates at different true wind speeds and points of sail — derived from hull speed, SA/D, and displacement, not measured polars.
| Point of Sail |
6 kts TWS |
10 kts TWS |
15 kts TWS |
20 kts TWS |
| Close-hauled40–50° |
1.9 |
2.3 |
2.6 |
2.7 |
| Close Reach60° |
2.2 |
2.8 |
3.2 |
3.3 |
| Beam Reach90° |
2.7 |
3.5 |
3.9 |
4.0 |
| Broad Reach120–135° |
2.5 |
3.2 |
3.6 |
3.7 |
| Run150–180° |
2.0 |
2.6 |
2.9 |
3.0 |
These are simplified estimates based on hull speed (5.0 kts),
SA/D (14.9), and empirical efficiency curves — not instrument-measured
polars. Real-world speed varies with sea state, bottom condition, sail trim, and current.
Speeds in gold approach hull speed;
bold gold means near or at hull speed.
Wind Range & Comfort Envelope
Estimated wind ranges for comfortable sailing on the Manta 16 — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–7 kts
7–20 kts
20–28 kts
28+ kts
Ghosting
0–7 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
7–20 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
20–28 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
28+ kts
Storm conditions. Storm jib or bare poles. Seek shelter if coastal.
How It Compares
Side-by-side with the boats most often cross-shopped against the Manta 16.
|
Manta 16 |
Apollo 16 |
Balboa 16 |
Leeward 16 Luger |
Neptune 16 |
Wayfarer |
| Dimensions |
| LOA |
15.8 |
15.8 |
16.0 |
16.0 |
15.8 |
15.8 |
| LWL |
13.6 |
— |
14.7 |
15.0 |
13.5 |
14.8 |
| Beam |
5.6 |
5.9 |
7.5 |
6.3 |
6.2 |
6.1 |
| Displacement |
1 |
300 |
1 |
650 |
900 |
372 |
| Ballast |
564 |
— |
400 |
— |
200 |
— |
| Sail Area |
115 |
129 |
117 |
140 |
115 |
141 |
| Performance |
| PHRF |
— |
— |
— |
— |
336 |
— |
| SA/Disp |
14.9 |
46.1 |
18.8 |
29.9 |
19.8 |
43.7 |
| Bal/Disp |
— |
— |
40.0 |
— |
— |
— |
| Comfort |
15.1 |
3.1 |
7.0 |
5.7 |
8.7 |
3.4 |
| Capsize |
2.01 |
3.54 |
3.00 |
2.89 |
2.56 |
3.38 |
| Hull Speed |
5.0 |
4.9 |
5.1 |
5.2 |
4.9 |
5.2 |