BOAT TRAILER - Plans on USB Flash Drive


This is a detailed set of plans, drawings and assembly guide for the construction of a Boat Trailer. Professionally prepared, the plans feature all the necessary detail to help you construct a strong and durable trailer. 


The plans are packaged/shipped on a USB Flash Drive

Our plans are also available on:

- CD-Rom, or

- Printed Hardcopies

Please see our other listings if you are interested in another format.

We can also email you a link to download the plans.


Plan Specifications:

  • Type: BOAT TRAILER PLAN – 7m(21ft) Monohull
  • Approx Boat Size: (LxW): 7000 x 2300 (21x7.5ft)
  • Overall Trailer Size: 8100 x 2300mm (27×7.5ft)
  • ATM (weight of trailer + max load): 3000kg
  • Tare (weight of trailer only): approximately 1100kg
  • Construction: RHS, Angle (various sections), keel rollers & skid rails
  • Suspension: Tandem Beam Axle & Leaf Springs
  • Features: Spare wheel mount, Winch mount…
  • Contents: 16 detailed part & assembly drawings, 10 page assembly guide, DXF files, pictures


Product Description:

The trailer is of steel construction but specifically designed for a mono-hull sea boat. Plans are supplied with a complete parts list, 10 page assembly guide and 16 detailed components and assembly drawings. It is one of the most comprehensive set of boat plans available today.

Boat Trailer Plan Features:

  • This tandem axle boat plan features curved/rolled chassis rails, adjustable winch post, guide rollers and skid rails to suit a mono-hull sea boat approximately 7000×2300 (21×7.5ft) in size.
  • Cross members are curved allowing boat to be positioned lower and reducing centre of gravity height, resulting in improved handling during towing.
  • Keel roller height from ground is 550mm.
  • Drawn to our usual high standard these Boat Trailer Plans will provide you with detailed dimensions on 16 part and assembly drawings, 10 page assembly guide, as well as a number of additional DXF files, wiring diagrams and spread sheets.

General Description

Detailed drawings are accompanied by a comprehensive Assembly Guide to assist you every step of the way during the construction of your trailer. The plans will provide all the necessary drawings, instructions, parts lists and handy tips to enable you to build with confidence, knowing your trailer is designed to conform to legal requirements.

Plans conform to the Australian National Code of Practice – Building Small Trailers (VSB1). Trailers built to comply with this code of practice can be registered for on-road use in Australia.



"Fast Transaction Quality Drawings"

"Fast delivery, great detailed product. Will be collecting the entire set..."

"Very precise drawings and a full list of parts including sizes !!! cant go wrong"

"Fast postage. Well detailed. Contains all the info Req for an easy build. Thanks"