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The Tug Yacht


Boojum 30 - A trailerable Tug Yacht - Kasten Marine Design, Inc.
Boojum 30 Outboard Profile | Boojum 30 Interior P & A | Boojum 30 Stack Detail
Boojum 25 Under Construction | Boojum 25 Painted | Boojum 25 Launched | Boojum 25 Under Sail

General Concept

The intent of the Boojum 30 design has been to take the Boojum 25 and give the vessel a measure of additional displacement (greater carrying capacity) for long range voyaging, a little more deck space, and a bit more room inside. An additional goal of the Boojum 30 design has been to simplify systems, primarily for the sake of making the little tug carefree and affordable to a wider variety of cruisers.

The added interior space allows a "stand up" spot forward of the double berth aft, a longer pilot house for the sake of the galley, and slightly more length to the saloon and head compartments. In all, there is just enough greater length to provide the all important "elbow room" for two, but our goal has been to keep the actual weight of the resulting vessel the same as the original Boojum 25.

Particulars are: 30' LOA x 27' DWL x 8' 6" Beam x 3' 9" Loaded Draft. Displacement will vary from around 14,000# to a full load capacity of 19,500# with all tanks full, and the boat ready for a long voyage, complete with stores for two people. The engine is a Lister Alpha 40 hp diesel, mated to a Sabb HVP-15 controllable pitch gear and propeller assembly.

As with the Boojum 25, hull and pilot house construction are aluminum. Portlights are glass. Pilothouse windows and portlights are Lexan except for the center forward window which is glass to permit a wiper. The pilot house top is cold molded wood for lightness and for ease of mounting hardware in the future.

Hull Form

Boojum 30's hull is modeled after working tugs, in order to get the largest carrying capacity within the smallest overall length. Beam has been limited to 8' 6" to allow trailering without being a "wide load." Deck structures have been kept as low as possible to provide for a low center of gravity, and also to permit trailering on the US freeway system. Still there is full standing headroom in the pilot house!

While the original Boojum 25 was configured with twin keels, the Boojum 30 has a single centerline keel. There is lead ballast amounting to 2,200 lb. within the keel, which provides an exceptional range of positive stability. The keel is also sufficient to allow "self rescue" sailing.

Interior Arrangement

Boojum 30's accommodations are intended to provide comfortable cruising for two people on extended passages, possibly with an occasional third crew member or couple for short jaunts.

There is a low forward cabin extending from an enclosed head forward, aft to the 'midships wheel house. The forward cabin top is actually the fore deck, so it extends the full width of the ship for its whole length at the height of the main bulwark top. This provides the greatest amount of interior space, the largest open deck area, the greatest forward freeboard, the most reserve buoyancy forward, and the greatest range of stability.

Within this forward cabin is the settee / saloon area, and the head. An overhead skylight / hatch allows light to enter the saloon, and opens for fresh air and emergency access to the fore deck. The settees are long enough to serve as guest berths. Water tanks and storage are provided under the settees.

Within the raised 'midship pilot house, the galley is to port, and the pilot seat and wheel are to starboard. The pilot house offers excellent visibility in all directions. Deck access is via a sliding door to starboard.

The "dashboard" forward of the wheel holds instruments and engine controls. Chart stowage is under seats and in back of cushions in the forward compartment.

To port, the galley includes a Wallas diesel range, and a sink with manual and electric pumps for fresh and salt water. There is a refrigerator under the pilot seat (starboard side). A large window is above the galley sink on the port side. Ample storage is provided below the galley counter.

The trunk cabin located aft of the wheel house encloses the sleeping quarters and storage lockers. A very welcome standing area is located just forward of the double berth, having a small bureau / dresser on each side.

Alternate Interior...?

One interesting variation can be seen in this Alternate Deck Plan showing a "bridge deck" amidships.

This would ideally be combined with widening / lengthening the pilot house (to eliminate the walk-around deck to the sides and aft). This would allow more space in the pilot house so that the galley could be moved up there, making space for the "bridge deck" amidships.

You can see a few interior sketches at the web page for the prototype sister ship: Sweet Okole 30.

Similar Designs and Prototypes in this Tug / Trawler Yacht Series

Tug Types
Boojum 22 | Boojum 25 | Boojum 30
Terrier 32 | Talisker 32 | Nidaros 38

Trawler Types
Sweet Okole 30 | Buster 30 | Boojum 43
Roberta 43 | Roberta Jean 43 | Roberta Jean 47
Far Horizon 40 | Far Horizon 43 | Far Horizon 46 | Far Horizon 50 | Far Horizon 54

Direct Quote from an aluminum boat owner... As an owner since 5 years of an aluminum boat I could not agree more with your preference for this material. She is a great boat and requires very little in the way of maintenance. I do a lot more reef snorkeling than the paint, polish, varnish and wax guys!

--Peter Kminek