IW IW-23 — Information, Review, Specs

Ivar Åkesson·1964 – 1969·~215 hulls·IW-Varvet
Approximate drawing

Hover a measurement to read its value

Hull type
Monohull · fin
Rig
Masthead Sloop
LOA
22.47' · 6.85 m
Displ.
3,307 lbs · 1,500 kg
First year
1964

The IW23 is a wellregarded small monohull sailboat, originally known as the F 18, designed by the Swedish naval architect Ivar Åkesson. Built by the renowned IWVarvet shipyard on Orust Island, Sweden, this compact vessel quickly gained a reputation for its solid construction and surprising sailing characteristics, embodying the builder's ethos of producing robust and seaworthy fiberglass yachts. With a length overall of just under 22.5 feet, the IW23 was conceived as a capable cruiser, offering a blend of performance and stability for its size.

Measurements

Dimensions 01

LOA
22.47 ft
LWL
19.68 ft
Beam
7.38 ft
Draft
3.61 ft
Max headroom
-
Air draft
-

Construction & hull 02

Construction
Fiberglass
Hull type
Monohull
Keel type
Fin
Rudder
1× Skeg-Hung
Ballast
1389 lbs (Iron)
Displacement
3307 lbs
Water
-
Fuel
-

Rig & sails 03

Rig type
Masthead Sloop
P · main luff
23.95 ft
E · main foot
8.85 ft
I · fore ht.
27.23 ft
J · fore base
6.75 ft
Forestay (est)
28.05 ft
Sail area
196 sqft

Calculations 04

SA/D ratio
14.13
Ballast/Disp.
42
D/L ratio
193.69
Comfort ratio
17.37
Capsize screening
1.98
Hull speed
5.94 kn

Conceived in an era when fiberglass was revolutionizing boat building, the IW-23, initially launched as the F 18 in 1962, reflects a design philosophy focused on creating a vessel that was both efficient and stout. The F 18 underwent a notable redesign, being renamed the IW-23 around 1964 and produced until 1969. This transition included a new deck and interior, suggesting a refinement aimed at enhancing usability and comfort. The same Ivar Åkesson design later saw production in Norway under the name Westcapp 23, further testament to its enduring design. The F 18 was also recognized within the RORC Class 5, indicating its suitability for racing under those rules.

Sailing Performance and Handling

For a sailboat of its size, the IW-23 offers noteworthy sailing characteristics. Designed by Ivar Åkesson, the hull of the IW-23 is described as being "slimmer than 69% of all other designs," pointing to a deliberate choice for a "slightly more speedy hull design" within its class. This design choice, combined with its fin keel and skeg-hung rudder, contributes to a perception of it being a "light displacement" vessel, offering good maneuverability and responsiveness. Owners frequently describe the IW-23 as a "calm sailor" (lugn seglare in Swedish), suggesting a stable and predictable motion through the water, making it a comfortable boat even in varied conditions.

Accommodations and Layout

While specific detailed interior layouts for the IW-23 are not extensively documented in broad public reviews, its evolution from the F 18 included a "new deck and interior," indicating an effort to optimize living spaces within its compact dimensions. As typical for a 22-foot sailboat of its era, the interior likely features a basic but functional arrangement. Reports suggest that the IW-23 could be equipped with essential amenities such as cushions, and optionally, a toilet and a table, emphasizing its intent as a coastal cruiser suitable for overnight stays. Due to its smaller size, headroom would be limited, and storage would be practical rather than extensive. The quality of its interior, much like its robust hull, would align with IW-Varvet's reputation for well-executed fiberglass work.

Owner's Perspectives

Owners of the IW-23 generally commend its solid, well-built construction, a hallmark of IW-Varvet's fiberglass yachts. This robust build quality contributes to a sense of security and durability on the water. However, some common points of feedback from owners relate to the cockpit and berths. The cockpit has been described as "cramped" (trång brunn), which might limit comfort for larger crews or extended periods at anchor. Similarly, the interior berths or bunks are often noted as "short" (korta kojer), which could be a consideration for taller sailors seeking comfortable sleeping arrangements. Despite these minor spatial limitations, the IW-23 remains appreciated for its reliable sailing performance and the overall integrity of its build.