Raven
Lym'n
Click images to enlarge
figure shown is scaled to a 6' tall person
POWER—The first vessel is intended to be powered with a 33hp Yamaha 3 cylinder diesel and a 3 to 1 gear reduction. Cooling is intended to be with a radiator. Using a radiator is possible because of the large engine room which allows ample access for air movement and ducting. A number of advantages can be had using radiator cooling:
1. No thru hull fittings, pumps and plumbing.
2. Proven technology
3. Simplicity of engine insulation
4. Ease of maintenance
5. Lower initial cost
6. Availability of a large volume of warm, dry air to be used or not.
29' RAVEN
The Raven is a 29 foot work vessel. In its simplest form it is a seaworthy open work vessel. The Raven's simplicity is an attempt to get a functional large foot print work platform available to the public at the lowest possible cost.The six foot wide opening transom transforms into a swim step or loading ramp. This feature facilitates the loading of skiffs, kayaks, ATVs etc. With 12 feet available from the back of the hatch to the transom and over 9 feet of potential width several ATVs could be accommodated on deck. Creative loading would allow for 60 or more full-size crab pots. This boat is also an excellent choice for long-lining. By putting a small freezer on board this could turn into a small-scale fish processor. Replacing large quantities of catch with high-quality product to be sold directly from the boat, cutting out the middle man.
Depending on individual requirements one could use the Raven as a large, open vessel or add on any of many personal improvements. For example, the shelter deck cover is one of many possible roof structures (see model to get a sense of proportion).
LIGHT BOAT STATISTICS—
LOA
29'
Beam
12'
Draft
3'
Displacement (light)
4500 lb.
Hp
33
Power to weight
Payload
Fuel consumption
GRIM REALITIES—
During my 20 year tenure as a director of the Shipwright's Co-op we found that a typical fishboat repair job would cost 25% materials and 75% labor. Using this formula a completed 29 foot Raven, without upper structure would cost about $80,000. As a production turn key basic boat the cost might come down as low as 50 or 60 thousand.
ANOTHER OPTION—Building the Raven as a kit boat. A computer program could be made that would have every required piece of the vessel inventoried and defined in either full size drawings or clear dimensions. With this available an individual, shop class or other group could cut each piece and label and stack them. Upon completion of approximately 250 pieces a shipwright from Big Foot Marine would be called to assist in the final construction to assure quality control in the completed vessel. An estimated two weeks would be required for final assembly. Using this method a completed 29 foot Raven could be made for as little as 25 or 30 thousand dollars.
Estimated materials cost:
40 sheets of good plywood
Epoxy, tape and cover cloth
Dimension lumber
Fastenings
Engine, shaft, hydraulics to deck
Rudder and steerage
Design fees and building
Estimated materials total
