Description
Classic 1238 – Aluminum Jon Boat Plans – Flat Bottom
The Classic 1238 aluminum jon boat is a compact, lightweight, and highly practical flat-bottom design built for fishing, recreation, and utility use. Its simple structure and efficient layout make it an excellent choice for builders looking for an easy-to-build and reliable small boat.
With a flat-bottom hull (0° deadrise), this boat provides outstanding stability and very shallow draft, making it perfect for rivers, lakes, and shallow water environments. Ideal for 1–2 persons, it is easy to transport, launch, and operate.
Why Choose This Jon Boat?
- Compact and easy-to-build design
- Flat-bottom hull for maximum stability
- Perfect for shallow water operation
- Lightweight and easy to transport
- Designed for small outboard engines (5–10 HP)
Technical Specifications
- Hull length: 11′ 10″ (3.60 m)
- Hull width: 50″ (1.27 m)
- Chine width: 38″ (0.97 m)
- Side depth: 17″ (43 cm)
- Cockpit depth: 15 1/2″ (39 cm)
- Fuel capacity: portable tank
- Deadrise: 0.0° (flat bottom)
- Dry hull weight: 308 lbs (140 kg)
- Maximum persons: 1–2
- Design category: D
- Transom inclination: 12°
- Transom height: 15″ (38.1 cm) – short shaft (S)
- Outboard engine: 5–10 HP
Construction & Materials
Imperial Version:
- Bottom, sides and seats: 1/8″ or 5/32″ aluminum
- Floor: 1/8″ aluminum or 3/8″ plywood
Metric Version:
- Bottom, sides and seats: 3 mm or 4 mm aluminum
- Floor: 3 mm aluminum or 9 mm plywood
This flexible material setup allows you to tailor the build to your needs, whether you prefer a full aluminum structure or a hybrid solution with a plywood floor.
Available Plan Options
HAND CUT (DIY Version)
Designed for self-cutting at home or in your garage using basic tools like a jigsaw.
- 1:1 Full-Scale Plans – print and transfer directly onto materials
- Plotting Points Method – build without large-format printing
CNC Version
Ready-to-use cutting files prepared for CNC machines. Ideal for precision builds and reduced construction time.
Perfect For
- Fishing on lakes and rivers
- Shallow water environments
- Solo or 2-person use
- DIY aluminum boat builders
Instant download available after purchase – start building today!
Didn’t find the boat you’re looking for? Need a customized version?
No problem. We can modify many of our existing boat designs or prepare a custom version based on your specific requirements.
Boat plans can be adapted to different dimensions, layouts, construction methods, and materials, including plywood, aluminum, steel, HDPE, wood, and fiberglass.
If you like this boat but would prefer a different size, interior layout, transom height, engine configuration, or construction material, contact us and tell us what you need.
We can advise you on the most suitable construction method and let you know whether your requested modifications are technically possible.
Please note that changes to the dimensions, structure, or construction material may require additional engineering and structural adjustments.
Prefer email? Write to us at info@boat-plans.com
