Back to Search
Mirror Offshore Mk I
Designer: E. G. Van De Stadt  ·  Builder: Tylers (Uk)  ·  First built: 1964
+ Add to Compare
About the Mirror Offshore Mk I

Building on the legacy of the iconic Mirror dinghy, the Mirror Offshore Mk I represents an ambitious leap from small boat sailing into coastal cruising waters. This compact cruiser was designed to bring the Mirror's renowned simplicity and accessibility to sailors seeking their first taste of offshore adventure. With its modest dimensions and straightforward systems, this boat excels as an entry-level coastal cruiser, perfectly suited for weekend getaways and short coastal hops. The design philosophy emphasizes ease of handling over outright performance, making it an ideal stepping stone for sailors transitioning from dinghies to keelboats or those seeking a manageable boat for single-handed sailing. The Mk I retains the Mirror brand's characteristic focus on practical, no-nonsense sailing. Its simple rig and uncluttered deck layout reduce complexity while maintaining seaworthiness for protected coastal waters. The accommodation, while basic, provides essential shelter and sleeping arrangements for short cruises. For sailors seeking an affordable introduction to coastal cruising without the intimidation factor of larger, more complex yachts, the Mirror Offshore Mk I offers a gentle gateway to exploring harbors and anchorages within reasonable distance of home port.

Core Dimensions
LOA (Length Overall) 18.86 ft / 5.75 m
LWL (Waterline Length) 15.75 ft / 4.80 m
Beam 6.73 ft / 2.05 m
Max Draft 1.90 ft / 0.58 m
Displacement 1,800.00 lb / 816 kg
Ballast 380.00 lb / 172 kg
Design & Construction
Hull Type Triple Keel
Rigging Type Masthead Sloop
Construction FG
Designer E. G. van de Stadt
Builder Tylers (UK)
First Built 1964
Owner Reviews

No owner reviews yet — be the first to share your experience with this boat.

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
21.11
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
205.68
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. 2.27 pounds/inch
Rig Dimensions
I (Foretriangle Height) 13.22
P (Mainsail Luff) 122.00 ft² / 11.33 m²
E (Mainsail Foot) Volvo
How It Compares

vs. Albin 57, Com Pac 19, Cornish Coble, Mirror Offshore Mk Ii, Pampero Amel

This boat Similar boats
Dimensions
LOA
Mirror Offshore Mk I ★
18.9 ft
Albin 57
18.8 ft
Com Pac 19
19.0 ft
Cornish Coble
19.0 ft
Mirror Offshore Mk Ii
18.9 ft
Pampero Amel
18.8 ft
LWL
Mirror Offshore Mk I ★
15.8 ft
Albin 57
16.4 ft
Com Pac 19
16.3 ft
Cornish Coble
13.3 ft
Mirror Offshore Mk Ii
15.8 ft
Pampero Amel
16.4 ft
Beam
Mirror Offshore Mk I ★
6.7 ft
Albin 57
7.9 ft
Com Pac 19
7.0 ft
Cornish Coble
6.0 ft
Mirror Offshore Mk Ii
6.7 ft
Pampero Amel
6.6 ft
Displacement
Mirror Offshore Mk I ★
1 lbs
Albin 57
1 lbs
Com Pac 19
2 lbs
Cornish Coble
599 lbs
Mirror Offshore Mk Ii
1 lbs
Pampero Amel
1 lbs
Ballast
Mirror Offshore Mk I ★
380 lbs
Albin 57
562 lbs
Com Pac 19
800 lbs
Cornish Coble
Mirror Offshore Mk Ii
380 lbs
Pampero Amel
507 lbs
Sail Area
Mirror Offshore Mk I ★
Albin 57
167 sq ft
Com Pac 19
145 sq ft
Cornish Coble
131 sq ft
Mirror Offshore Mk Ii
152 sq ft
Pampero Amel
Performance
SA / Displacement (higher = more powerful)
Mirror Offshore Mk I ★
Albin 57
18.3
Com Pac 19
14.7
Cornish Coble
29.5
Mirror Offshore Mk Ii
17.1
Pampero Amel
Ballast / Disp (higher = stiffer)
Mirror Offshore Mk I ★
21.1 %
Albin 57
31.9 %
Com Pac 19
40.0 %
Cornish Coble
Mirror Offshore Mk Ii
Pampero Amel
39.6 %
Comfort Ratio (higher = more comfortable offshore)
Mirror Offshore Mk I ★
Albin 57
10.1
Com Pac 19
13.5
Cornish Coble
5.7
Mirror Offshore Mk Ii
12.4
Pampero Amel
Capsize Screening (lower = safer)
Mirror Offshore Mk I ★
Albin 57
2.62
Com Pac 19
2.22
Cornish Coble
2.85
Mirror Offshore Mk Ii
2.26
Pampero Amel
Displacement / Length (lower = lighter)
Mirror Offshore Mk I ★
205
Albin 57
178
Com Pac 19
205
Cornish Coble
115
Mirror Offshore Mk Ii
Pampero Amel
129
Hull Speed
Mirror Offshore Mk I ★
Albin 57
5.4 kts
Com Pac 19
5.4 kts
Cornish Coble
4.9 kts
Mirror Offshore Mk Ii
5.3 kts
Pampero Amel
Speed Number (higher = faster)
Mirror Offshore Mk I ★
Albin 57
3.1
Com Pac 19
2.4
Cornish Coble
Mirror Offshore Mk Ii
Pampero Amel
Find a Mirror Offshore Mk I For Sale