Single Chine Hull: Design 361TY: Tug-Yacht Pouch


LOA: 21 ft.
Beam: 9 ft.-2 in.
Draft: 3 ft-4 in.
Displacement: 7500 lbs.
Construction: FG, Epoxy Ply (West System), Aluminum, or Steel
Recommended Power Pleasure: 36-55 Hp Diesel
Maximum engine with gear weight: 1000 lbs. Requires offset output shaft: 7-8 degrees.

Profile 361TY

Plan 361TY

May be built in pre-lam (sheet) fiberglass, epoxy/plywood, steel, or aluminum. The fiberglass pre-lam can be cast on a flat moulding surface using regular FG cloth and resin. Concave and convex fillets for hull and superstructure joints are cast in simple moulds. All the fiberglass pre-lam necessary for construction can be made up in advance with one long weekend spent on making the moulds and dedicated evenings thereafter for 6 or 8 weeks. For pre-lam GRP sheet or epoxy/plywood construction I recommend Gougeon Bros. epoxies and other components of the West System and their PRO-SET line of laminating resins rather than polyester type resins. This also allows you to use inexpensive styrofoam billets for making up cores and filler shapes. More detail on the technique which we developed for this hull is included in the tutorial. For metal hulls aluminum is recommended, with steel as a second choice.
This is a single chine hull (flat bottom) with a full keel. 
Power requirements are economical and range from 35 to 55 SHP. A compact diesel is recommended, with a maximum engine weight of around a 1000 lbs. with marine gear. In this suggested interior plan there are two berths, head, table, and small galley in the after cabin, with a pass-through to the pilothouse. The pilothouse has a seat and chart table with entry into the enclosed engineroom. Plenty of storage space is available outboard of the bunks and beneath them, as well as forward and aft via deck hatches.
As for all my tug designs, I do not confine you to a specific interior plan or engine/gear combination, preferring to allow you to tailor it to your intended use. The interior plan for this tug-yacht is suggested, but you can alter it to suit. Each hull built from the design becomes essentially a custom vessel. The Tutorials and Addendum give a reasonable amount of guidance to help you with your selection.
If you are more interested in a live-aboard lifestyle, look at Design 367TY Perk on the Tug-Yachts page. 

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Design and all rights reserved.
Copyright 2003 M. E. Low, Gloucester, MA USA
Revised 20 May 2003