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Dean 5000
Designer: Peter Dean  ·  Builder: Dean Catamarans (Rsa)  ·  First built: 2010
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About the Dean 5000

Designed by Peter Dean and built by Dean Catamarans in South Africa between 2010 and 2014, this substantial 50-foot catamaran represents a compelling option for serious cruising sailors seeking performance and comfort. With its impressive 26-foot beam and twin-keel configuration, the Dean 5000 offers exceptional stability and generous interior volume while maintaining surprisingly shallow 4.92-foot draft access to protected anchorages. The fractional sloop rig delivers excellent sailing characteristics, with the SA/Displacement ratio of 21.11 indicating spirited performance in moderate conditions. At nearly 40,000 pounds displacement, this is a solidly built cruising platform designed for extended offshore passages rather than lightweight racing. The fiberglass construction ensures durability for long-term cruising adventures. Twin 65-horsepower engines provide reliable auxiliary power and excellent maneuverability in tight quarters or adverse conditions. The catamaran's wide beam creates exceptional living space below, making it particularly attractive for couples or families planning extended cruising. While the Dean 5000 had a relatively short production run, it represents Peter Dean's philosophy of combining seaworthy design with comfortable accommodations, making it well-suited for coastal exploration and offshore passage-making alike.

Core Dimensions
LOA (Length Overall) 50.49 ft / 15.39 m
LWL (Waterline Length) 49.70 ft / 15.15 m
Beam 26.25 ft / 8.00 m
Max Draft 4.92 ft / 1.50 m
Displacement 39,683.00 lb / 18,000 kg
Sail Area (Reported) 1,528.48 ft² / 142.00 m²
Design & Construction
Hull Type Catamaran Twin Keel
Rigging Type Fractional Sloop
Construction FG
Designer Peter Dean
Builder Dean Catamarans (RSA)
First Built 2010
Last Built 2014
Owner Reviews

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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
21.11
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
15.69
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
3.08
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. 9.45 kn
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. 27.96 pounds/inch
Rig Dimensions
Mast Height (DWL) 78.74 ft / 24.00 m
Engine & Accommodations
Engine Type Diesel
Horsepower 2x 65
Fuel Capacity 209 gals / 790 L
Water Capacity 209 gals / 790 L
KSP 0.69
How It Compares

vs. Excess 13, Moorings 500

This boat Similar boats
Dimensions
LOA
Dean 5000 ★
50.5 ft
Excess 13
50.2 ft
Moorings 500
50.4 ft
LWL
Dean 5000 ★
49.7 ft
Excess 13
42.6 ft
Moorings 500
44.5 ft
Beam
Dean 5000 ★
26.3 ft
Excess 13
23.8 ft
Moorings 500
15.6 ft
Displacement
Dean 5000 ★
39 lbs
Excess 13
23 lbs
Moorings 500
28 lbs
Sail Area
Dean 5000 ★
1 sq ft
Excess 13
1 sq ft
Moorings 500
1 sq ft
Performance
SA / Displacement (higher = more powerful)
Dean 5000 ★
21.1
Excess 13
24.3
Moorings 500
17.5
Comfort Ratio (higher = more comfortable offshore)
Dean 5000 ★
15.7
Excess 13
Moorings 500
24.7
Capsize Screening (lower = safer)
Dean 5000 ★
3.08
Excess 13
Moorings 500
2.04
Hull Speed
Dean 5000 ★
9.5 kts
Excess 13
Moorings 500
8.9 kts
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