The Laguna 18 is well-powered with enough sail area to move in light air, 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 14.7′, the Laguna 18 tops out around 5.1 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √14.7′ LWL = 5.1 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
18.5
Powerful cruiser/racer — quick in light air, reef early when it pipes up.
Comfort Ratio
9.3
Quick, snappy motion — better for day sails and racing than long passages.
Capsize Screening
2.80
Above the 2.0 offshore threshold — best suited for coastal and protected waters.
Pounds/Inch Immersion
419lbs
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
9.3
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
2.80
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 Laguna 18 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
Cruiser 150–210
Heavy Cruiser 210–300
Hunter 18
282s/nm
Catalina 18
289s/nm
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° |
2.1 |
2.7 |
3.0 |
3.1 |
| Close Reach60° |
2.6 |
3.3 |
3.6 |
3.8 |
| Beam Reach90° |
3.2 |
4.0 |
4.5 |
4.7 |
| Broad Reach120–135° |
2.9 |
3.7 |
4.1 |
4.3 |
| Run150–180° |
2.3 |
3.0 |
3.3 |
3.4 |
These are simplified estimates based on hull speed (5.1 kts),
SA/D (18.5), 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 Laguna 18 — based on sail area, ballast, and displacement characteristics.
Ghost
Sweet Spot
Reef
Heavy
0–6 kts
6–18 kts
18–26 kts
26+ kts
Ghosting
0–6 kts
Light air, motor-sailing likely. Need patience and a light genoa.
Sweet Spot
6–18 kts
Comfortable under full sail. Best speed-to-comfort ratio.
Time to Reef
18–26 kts
Time to shorten sail. Reef the main, swap to a working jib.
Heavy Weather
26+ 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 Laguna 18.
|
Laguna 18 |
Capri 18 Catalina |
Catalina 18 |
Hunter 18 |
S2 55 |
Windrose 55 |
| Dimensions |
| LOA |
18.0 |
18.0 |
18.0 |
18.0 |
18.0 |
18.0 |
| LWL |
14.7 |
16.3 |
15.8 |
15.5 |
16.3 |
16.0 |
| Beam |
8.0 |
7.6 |
7.8 |
7.5 |
7.7 |
8.0 |
| Displacement |
1 |
1 |
1 |
1 |
600 |
1 |
| Ballast |
500 |
425 |
500 |
500 |
— |
500 |
| Sail Area |
151 |
155 |
152 |
145 |
176 |
151 |
| Performance |
| PHRF |
— |
— |
289 |
282 |
— |
— |
| SA/Disp |
18.5 |
19.0 |
19.9 |
18.5 |
39.6 |
18.5 |
| Bal/Disp |
— |
28.3 |
37.0 |
35.7 |
— |
33.3 |
| Comfort |
9.3 |
9.3 |
8.2 |
9.0 |
3.7 |
8.8 |
| Capsize |
2.80 |
2.65 |
2.81 |
2.68 |
3.64 |
2.80 |
| Hull Speed |
5.1 |
5.4 |
5.3 |
5.3 |
5.4 |
5.4 |