Both are Seawind's galley-up ocean catamarans with three cabins and a short-handed rig. The difference is size, daggerboards and price. Here is how to choose, using the yard's figures.
1. What they have in common
Both boats share the layout that Seawind first used on the 1600 and later brought to the 1370: cockpit, saloon, galley and both helms on one level, with no steps. A folding door between saloon and cockpit lifts up under the roof, so the two become one living space. In the three-cabin version one hull is a full owner's suite and the other has two guest cabins. Both are CE category A and are built at Seawind's yard in Vietnam.
2. Size
Seawind 1370: 13.7 m long, 7.6 m beam, 12.3 t displacement (yard data).
Seawind 1600: 16.1 m long, 8.1 m beam, 14.4 t displacement (yard data).
The 1600 is about 2.4 m longer. On board that means more volume in the hulls and the saloon, and more boat to berth and to pay for in a marina.
3. Keels or daggerboards
This is the main technical difference.
The 1370 has fixed mini keels: draft 1.3 m, nothing to adjust.
The 1600 is the only Seawind with daggerboards: draft 2.6 m with boards down and about 0.6 m with boards and rudders up (yard data). Boards help the boat point higher upwind and let you tuck into shallow anchorages. In return there is one more system to handle and maintain.
4. Sails and engines
1370: mainsail 80 m² plus self-tacking jib 36 m², 116 m² in total; 2 × Yanmar 40 hp.
1600: mainsail 100 m² plus jib 44.5 m², 144.5 m² upwind; optional screecher 92.5 m² and spinnaker 220 m²; 2 × Yanmar 57 hp.
Both rigs are set up for a short-handed crew, with a self-tacking jib.
5. Autonomy
1370: 600 l fuel, 600 l water, 240 l holding tanks.
1600: 750 l fuel, 658 l water.
6. Price
Base yard prices, ex VAT, ex works (Seawind price list 04/2026):
Seawind 1370 — from $820,000.
Seawind 1600 — from $1,200,000.
The final figure depends on options, delivery and taxes.
Which one to choose
Choose the 1370 if you sail as a couple, want a simpler boat with fixed keels and a lower budget, and the space of a 45-footer is enough for you.
Choose the 1600 if you want more performance upwind, access to shallow bays with the boards up and more room for guests or long periods aboard — and are comfortable with a bigger boat.
If you are between the two, write to us: we will compare the exact specifications and yard prices for your plans. Each boat has its own page in the Seawind section.
Published 30 October 2026