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Thom Cat 19
Designer: Menger  ·  Builder: Menger Boatworks (Usa)/Thompson Boatworks  ·  First built: 1990
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About the Thom Cat 19

A compact and nimble small sailboat, the Thom Cat 19 is a vessel that appeals to sailors looking for an approachable and manageable craft for day sailing and light coastal adventures. Designed with simplicity in mind, this boat suits those who want to enjoy time on the water without the complexity or expense of a larger cruising yacht. While detailed specifications for the Thom Cat 19 are limited in available records, boats of this size and type typically excel in protected bays, lakes, and near-shore coastal waters where conditions remain moderate. The 19-foot range is a sweet spot for solo sailors and small crews alike, offering enough space for a comfortable outing while remaining trailerable and easy to handle. For buyers researching the Thom Cat 19, connecting with owners through sailing forums and small-boat communities may be the best path to uncovering firsthand accounts of its handling characteristics and quirks. As with many lesser-documented designs, the boat's true reputation often lives within the community of sailors who have spent real time aboard it.

Core Dimensions
LOA (Length Overall) 19.00 ft / 5.79 m
LWL (Waterline Length) 18.42 ft / 5.61 m
Beam 8.00 ft / 2.44 m
Max Draft 4.50 ft / 1.37 m
Min Draft 1.83 ft / 0.56 m
Displacement 2,900.00 lb / 1,315 kg
Ballast 600.00 lb / 272 kg
Sail Area (Reported) 270.00 ft² / 25.08 m²
Design & Construction
Hull Type Keel/Cbrd.
Rigging Type Gaff head Cat
Construction FG
Designer Menger
Builder Menger Boatworks (USA)/Thompson Boatworks
First Built 1990
Owner Reviews

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Known Issues & What to Watch For

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Performance Ratios
SA/Displacement Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
21.3
Comfort Ratio Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
15.1
Capsize Screening Formula The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
2.25
Hull Speed Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions. 5.75
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 526.53
How It Compares

vs. Alerion Express 19, Com Pac 19, Cornish Coble, Menger Cat 19, Rhodes 19

This boat Similar boats
Dimensions
LOA
Thom Cat 19 ★
19.0 ft
Alerion Express 19
19.2 ft
Com Pac 19
19.0 ft
Cornish Coble
19.0 ft
Menger Cat 19
19.0 ft
Rhodes 19
19.2 ft
LWL
Thom Cat 19 ★
18.4 ft
Alerion Express 19
18.9 ft
Com Pac 19
16.3 ft
Cornish Coble
13.3 ft
Menger Cat 19
18.4 ft
Rhodes 19
17.8 ft
Beam
Thom Cat 19 ★
8.0 ft
Alerion Express 19
8.7 ft
Com Pac 19
7.0 ft
Cornish Coble
6.0 ft
Menger Cat 19
8.0 ft
Rhodes 19
7.0 ft
Displacement
Thom Cat 19 ★
2 lbs
Alerion Express 19
1 lbs
Com Pac 19
2 lbs
Cornish Coble
599 lbs
Menger Cat 19
2 lbs
Rhodes 19
1 lbs
Ballast
Thom Cat 19 ★
600 lbs
Alerion Express 19
300 lbs
Com Pac 19
800 lbs
Cornish Coble
Menger Cat 19
600 lbs
Rhodes 19
415 lbs
Sail Area
Thom Cat 19 ★
270 sq ft
Alerion Express 19
Com Pac 19
145 sq ft
Cornish Coble
131 sq ft
Menger Cat 19
Rhodes 19
175 sq ft
Performance
PHRF Rating (lower = faster)
Thom Cat 19 ★
Alerion Express 19
Com Pac 19
Cornish Coble
Menger Cat 19
326 s/nm
Rhodes 19
261 s/nm
SA / Displacement (higher = more powerful)
Thom Cat 19 ★
21.3
Alerion Express 19
Com Pac 19
14.7
Cornish Coble
29.5
Menger Cat 19
Rhodes 19
22.9
Ballast / Disp (higher = stiffer)
Thom Cat 19 ★
Alerion Express 19
17.1 %
Com Pac 19
40.0 %
Cornish Coble
Menger Cat 19
20.7 %
Rhodes 19
Comfort Ratio (higher = more comfortable offshore)
Thom Cat 19 ★
15.1
Alerion Express 19
Com Pac 19
13.5
Cornish Coble
5.7
Menger Cat 19
Rhodes 19
8.6
Capsize Screening (lower = safer)
Thom Cat 19 ★
2.25
Alerion Express 19
Com Pac 19
2.22
Cornish Coble
2.85
Menger Cat 19
Rhodes 19
2.53
Displacement / Length (lower = lighter)
Thom Cat 19 ★
Alerion Express 19
115
Com Pac 19
205
Cornish Coble
115
Menger Cat 19
207
Rhodes 19
Hull Speed
Thom Cat 19 ★
5.8 kts
Alerion Express 19
Com Pac 19
5.4 kts
Cornish Coble
4.9 kts
Menger Cat 19
Rhodes 19
5.7 kts
Speed Number (higher = faster)
Thom Cat 19 ★
Alerion Express 19
Com Pac 19
2.4
Cornish Coble
Menger Cat 19
Rhodes 19
4.9
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