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Sirius 23
Designer: K. Schröter Travenünde  ·  Builder: Grell Werft (Germany)
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About the Sirius 23

A compact and capable small cruiser, the Sirius 23 represents the kind of no-frills sailboat that appeals to sailors looking for an accessible entry point into coastal and inland cruising. Built with practicality in mind, this boat is well suited to day sailing and weekend adventures on sheltered waters, offering a manageable size that makes solo or short-handed sailing a realistic proposition for a wide range of experience levels. While detailed specifications are limited, the Sirius 23 carries a reputation as a sensible and honest design — the sort of boat that prioritizes usability over complexity. Its modest size makes it easy to trail, launch, and maintain, reducing the overhead that often accompanies boat ownership. Sailors drawn to uncomplicated rigs and predictable handling tend to find boats in this class particularly rewarding. For someone researching an affordable and approachable sailboat that can handle calm coastal passages or a spirited day on the water without demanding expert-level seamanship, the Sirius 23 deserves a closer look. Connecting with owners through sailing forums can offer valuable real-world insight into this boat's particular character.

Core Dimensions
LOA (Length Overall) 23.29 ft / 7.10 m
LWL (Waterline Length) 19.69 ft / 6.00 m
Beam 8.20 ft / 2.50 m
Max Draft 4.10 ft / 1.25 m
Displacement 2,646.00 lb / 1,200 kg
Ballast 926.00 lb / 420 kg
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction FG
Designer K. Schröter Travenünde
Builder Grell Werft (GERMANY)
Owner Reviews

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Known Issues & What to Watch For

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Performance Ratios
Ballast/Displacement Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
35.0
Displacement/Length Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
154.74
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. 3.46 pounds/inch
Rig Dimensions
I (Foretriangle Height) 20.76
P (Mainsail Luff) 247.57 ft² / 23.00 m²
E (Mainsail Foot) Farymann
Engine & Accommodations
Horsepower 8
Water Capacity 13 gals / 50 L
How It Compares

vs. First 235 Beneteau, Precision 23, Tonic 23 Jeanneau

This boat Similar boats
Dimensions
LOA
Sirius 23 ★
23.3 ft
First 235 Beneteau
23.3 ft
Precision 23
23.4 ft
Tonic 23 Jeanneau
23.3 ft
LWL
Sirius 23 ★
19.7 ft
First 235 Beneteau
20.3 ft
Precision 23
20.0 ft
Tonic 23 Jeanneau
20.3 ft
Beam
Sirius 23 ★
8.2 ft
First 235 Beneteau
8.2 ft
Precision 23
8.5 ft
Tonic 23 Jeanneau
8.9 ft
Displacement
Sirius 23 ★
2 lbs
First 235 Beneteau
2 lbs
Precision 23
2 lbs
Tonic 23 Jeanneau
3 lbs
Ballast
Sirius 23 ★
926 lbs
First 235 Beneteau
825 lbs
Precision 23
850 lbs
Tonic 23 Jeanneau
1 lbs
Sail Area
Sirius 23 ★
First 235 Beneteau
248 sq ft
Precision 23
248 sq ft
Tonic 23 Jeanneau
248 sq ft
Performance
SA / Displacement (higher = more powerful)
Sirius 23 ★
First 235 Beneteau
19.9
Precision 23
21.9
Tonic 23 Jeanneau
16.4
Ballast / Disp (higher = stiffer)
Sirius 23 ★
35.0 %
First 235 Beneteau
Precision 23
Tonic 23 Jeanneau
35.3 %
Comfort Ratio (higher = more comfortable offshore)
Sirius 23 ★
First 235 Beneteau
12.6
Precision 23
10.4
Tonic 23 Jeanneau
14.8
Capsize Screening (lower = safer)
Sirius 23 ★
First 235 Beneteau
2.31
Precision 23
2.53
Tonic 23 Jeanneau
2.28
Displacement / Length (lower = lighter)
Sirius 23 ★
154
First 235 Beneteau
Precision 23
Tonic 23 Jeanneau
198
Hull Speed
Sirius 23 ★
First 235 Beneteau
6.0 kts
Precision 23
6.0 kts
Tonic 23 Jeanneau
6.0 kts
Speed Number (higher = faster)
Sirius 23 ★
First 235 Beneteau
3.8
Precision 23
4.3
Tonic 23 Jeanneau
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