Nautilus 11 M Information, Review, Specs

Boat drawing
Make
Nautilus
Model
11 M
Number Built
5
Production Year(s)
1981 - 1990

The Nautilus 11 M is a robust and comfortable fiberglass sailboat, designed as a capable cruising yacht well-suited for adventurous voyages and "blue water adventure." Built by Aztec Yachts in Ontario, Canada, this 36.16-foot monohull was conceived to offer a harmonious blend of performance and liveability, positioning it as a valuable resource for those seeking reliability on extended passages. Its design, attributed to Henri Adriaanse (also noted as Henri Adriaanse/Henk Zwart), reflects a focus on sturdy construction and sea-kindly characteristics. 1, 4, Builder Article

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The Nautilus 11 M entered production in 1981 and continued to be built by Aztec Yachts until 1990, with approximately five units completed during this period. 1, 4, Builder Article Aztec Yachts, nestled on the shores of Niagara-on-the-Lake, established a reputation for crafting durable fiberglass cruising yachts, a popular material choice of the era for its longevity and ease of maintenance. The design philosophy behind the Nautilus 11 M, shaped by naval architect Henri Adriaanse, emphasized suitability for "blue water adventure," focusing on robust construction and sea-kindly characteristics to appeal to sailors seeking reliability for extended cruises. Notably, the hull design of the Nautilus 11 M shares similarities with the C&C 37, suggesting a heritage rooted in well-regarded performance characteristics. During its production run, some Nautilus 11 M vessels were built with a dual-station configuration, offering both an interior and exterior helm, a notable variation that enhances its motorsailer capabilities.

Sailing Performance and Handling

The Nautilus 11 M exhibits characteristics indicative of a capable and comfortable cruiser. With a reported sail area of 605 square feet and a displacement of 15,000 pounds, its sail area to displacement ratio (SA/D) of approximately 15.9 suggests a moderate performer, capable of good all-around sailing without being overly sensitive in light air or sluggish in heavier conditions. The high ballast-to-displacement ratio of approximately 40.6% (6,100 lbs ballast in a 15,000 lb displacement) points to a stiff and stable vessel, capable of standing up to a considerable amount of wind and providing a comfortable motion in a seaway. Furthermore, its displacement-to-length ratio (D/L) of approximately 305 classifies it as a heavier displacement cruiser, indicating a solid, sea-kindly boat. Owners and reviews consistently praise the Nautilus 11 M for sailing "very well" and offering a comfortable and enjoyable experience in various weather conditions. Its hull speed is calculated at 7.09 knots.

Accommodations and Layout

While specific interior headroom details are not widely available, the Nautilus 11 M, with its 36.16-foot length overall and 11.5-foot beam, would typically feature a layout designed for comfortable cruising. Notably, some models were configured with a "dual station" setup, providing both an exterior cockpit helm and an interior steering position, a feature that significantly enhances its utility, especially in inclement weather or for extended voyaging. This dual-station capability often includes two swivel seats for navigation and piloting from within the cabin. The interior is often described as designed for "wet gear less" offshore cruising, suggesting practical and durable finishes suitable for a demanding marine environment. A typical layout for a vessel of this size and era would likely include a V-berth forward, a main salon with settees and a dining table, a galley, a head compartment, and potentially a quarter berth or aft cabin. Details regarding specific materials or finish quality would typically align with the robust and utilitarian ethos of a blue-water cruising yacht builder.

Measurements

Construction & Hull

Construction Material
Fiberglass (Solid)
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x Spade
Ballast
6100 lbs
Displacement
15000 lbs
Water Capacity
-
Fuel Capacity
-

Engine

Engine Make
Perkins
Engine Model
Engine Type
Engine HP
Engine Count
1
Drive Type
Fuel Type
Diesel
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Cutter
P (Main Luff)
-
E (Main Foot)
-
I (Foretriangle Height)
-
J (Foretriangle Base)
-
Forestay Length (est)
-
Main Sail Area
-
Foretriangle Sail Area
-
Total Sail Area (Reported)
605 sqft
Total Sail Area (Calc)
-

Dimensions

LOA
36.16 ft
LWL
28 ft
Beam
11.5 ft
Draft
5 ft
Max Headroom
-
Air Draft
-

Calculations

Hull Speed
7.09 kn
Pounds per Inch Immersion
1