Think of a place you want to go on the water and the "Tropic 12" can get you there. Whether you're fishing, diving or just having fun, the Tropic 12 is an ideal family/ multi species fishing boat. Easy on the pocket and packed with features left only to your imagination, the Tropic 12 maximizes it's space with a wide beam, stable hull and an open and roomy interior for loads of storage and fishable cockpit space, whilst out on the water.

      The heart and soul of the Tropic 12 lies in its modified-V hull, designed for the tough demands of fishing or family excursions, whether your running the estuary's of the Gulf or fishing the freshwater river backwaters and lakes. But the real beauty of the Tropic 12 is its wide beam and shallow draft, enabling you to navigate across shallow flats, up coastal rivers and even into tidal creeks. Overall, it's the perfect all rounder that's easy to handle, easy to trailer and more importantly...easy to build.

Overall Hull length = 12 ft ( 3.65m)
Beam = 5 ft (1.52m)
Rec Horsepower = 10-15 Hp
Engine shaft length = S/S (15")
Fuel Capacity = Builders Choice 
Approx Hull weight (pending builder) = 132 lbs (60 kg)

   The Tropic 12 Specifications 
I'm happy as the proverbial pig.
Went for another trip in the boyne river today but in a different area. This spot is just upstream from the bruce highway bridge at Benaraby. Not exactly a ramp, more like a depression in the river bank as the pic shows. The Tropic 12 doesn't need much water to launch. 24kts according to Lowrance
 It was a lot of fun though :lol:
Thanks Mark

                       With the best technical support: we will help you succeed!
                               All our plans come with full technical support.


We will respond immediately. At the same please visit our forum site, to share ideas about our boats and thousands of pictures - see completed boats and many of the building steps done by builders like you.
Also, all the fiberglass supplies required to build our boats are available at Bowdidge marine Designs, delivered to your door.

Designed Boat Plans

Proudly Australian
Marine Designs
 Boat Designs with "Reel Flare"

         We have boat plans (both yacht designs, catamaran designs and power designs) for all sizes for the amateur boat builder and Professional boatbuilder. From the 12ft Mushulu plywood stitch & glue power boat design to the Oceansky 57 strip plank composite multihull design. We design and build, plywood boats, strip plank boats and fibreglass composite boats to very modern styling for both yacht designs, multihull designs and power boat in round bilge, multi-chine or radius chine hull forms, including aluminum drift boats, aluminum landing craft, aluminum monohull boats, aluminum catamarans, aluminum special purpose boats, and aluminum RIBs

The construction is epoxy-fiberglass-plywood composite, a stitch and glue composite system designed for efficient and fast building. To put it another way, the hull material is engineered as a fiberglass laminate whereby the plywood is treated as a thick, yet weaker laminate within the fibreglass schedule.
Building the boat is easy. The builder simply assembles the hull as a plywood boat first, then glasses the outside and inside with fiberglass, to produce a strong composite hull without all the time consuming woodwork associated with traditional plywood on frame. Bog, fair, paint then time for the internals. Its that easy
                         To see more on our  plywood composite construction method, please click HERE.    

Tropic 12 Plan Prices
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                 Postage Worldwide

The following list of materials is approximate and intended for calculation of approximate costs. We offer no guarantees of accuracy. The list is for all plywood in the construction of the hull, deck and interior. Allowance has been made in the quanties for about 10% wastage. Resin and glass quanties are only approximate.

6mm (1/4") - 6 Sheets
9mm (3/8") - 1 Sheet

RESIN AND GLASS (For coatings and reinforced areas)
Epoxy Resin & Hardener - 24 kg (6.34 US gal)
195gm (6oz) cloth fabric - 19 sq.m ( 23 sq.yards)
2 kg (4.4 lbs) glue powder (Cabosil)
2kg  (4.4 lbs) Q-cells (fairing Powder)

The materials list above covers all the supplies for the boat as designed.
Useage of materials may vary due to several factors. For example, a experienced builder will use less resin. Our resin calculations are based on a 50% glass content. Options, customization and variations within your build will also effect the bill of materials and outcome.  

    Bowdidge Marine Designs
Performance  Boat Designs with "Flare"
"Boats Built by People ...  
 ... Just like You"

COMPLETE PAPER BOAT PLANS : For our builders we offer full size printed bulkhead/ frame patterns, printed on 24" wide paper which are taped together to provide fulls size outlines. Using the full size patterns and detailed plan sheets, the parts can be accurately marked and cut out.
All Plan sheets are printed on Architectural D (24" x 36" ) paper except for the full size patterns. Detailed plans consist of  9 sheets which detail all aspects of construction.

SAVE TWO THIRDS! YES, you can build your own boat & SAVE TWO THIRDS of the cost of a factory built power or sailboat, YOU can prove it ... Just order the PLANS of your choice,  build your own & you can SAVE 50% of the cost of a USED boat &, you do not even have to do all the work yourself to save.


Plans are dimensioned in both metric and imperial systems.
We do not offer CNC cut files for this design.