13 Foot (3.95m) Aluminum Utility Skiff Plans

Description

13 Foot (3.95 m) Aluminum Utility Skiff Plans

The 13 Foot (3.95 m) Aluminum Utility Skiff is a compact, stable, and versatile welded aluminum boat designed for fishing, recreation, and general utility use. With a 69″ (1.75 m) beam, progressive V-bottom hull, and seven integrated storage lockers, this design provides a practical combination of stability, interior space, and everyday functionality.

The boat is designed for 10–40 HP outboard engines and can carry up to three persons. Its relatively deep interior, useful floor area, and substantial storage capacity make it well suited to fishing, day trips, and general-purpose boating.

Main Features

• 13′ (3.95 m) welded aluminum utility skiff
• 69″ (1.75 m) beam
• Progressive V-bottom hull
• 9.5° deadrise at the stern
• Seven integrated storage lockers
• Maximum capacity: 3 persons
• Designed for 10–40 HP outboard engines
• 20″ (508 mm) long-shaft transom
• Portable fuel tank
• Design Category C

Technical Specifications

• Overall Length: 13′ (3.95 m)
• Beam Width: 69″ (1.75 m)
• Floor Dimensions: 65″ x 39 1/8″ (1650 x 994 mm)
• Draft: 8″ (20 cm)
• Maximum Draft at Waterline: 9 7/8″ (25 cm)
• Interior Depth: 25 9/16″ (65 cm)
• Side Height at Stern (bottom to gunwale): 26 9/16″ (675 mm)
• Side Height at Bow (bottom to gunwale): 33 7/16″ (850 mm)
• Deadrise at Stern: 9.5°
• Deadrise at 1.5 m (4′ 11″) from Stern: 12°
• Deadrise at 3.0 m (9′ 10″) from Stern: 20.5°
• Dry Hull Weight: 540 lbs (245 kg)
• Fuel System: Portable Fuel Tank
• Maximum Persons: 3
• Design Category: C
• Transom Inclination Angle: 12°
• Transom Height: 20″ (508 mm) – Long Shaft (L)
• Recommended Outboard Engine: 10–40 HP
• Storage: 7 Lockers

Progressive V-Bottom Hull

The hull features a progressive deadrise that increases toward the bow. The deadrise is 9.5° at the stern, 12° at approximately 1.5 m (4′ 11″) from the stern, and 20.5° at approximately 3.0 m (9′ 10″) from the stern.

This hull geometry provides good stability at rest while the sharper forward sections help improve comfort and handling when running through chop.

Storage and Interior Layout

The boat includes seven integrated storage lockers, providing useful space for fishing equipment, safety gear, batteries, tools, ropes, and other onboard accessories.

The floor measures 65″ x 39 1/8″ (1650 x 994 mm), while the 25 9/16″ (65 cm) interior depth provides a practical and secure cockpit for up to three persons.

Aluminum Construction

Construction Method

The boat is designed as a fully welded aluminum structure. The hull uses 4 mm frames, stringers, and transom components combined with 3 mm bottom, side, and seating panels.

This construction creates a strong and practical structure for a compact utility skiff. Accurate fitting, tack welding, dimensional checks, and a controlled welding sequence are recommended to maintain hull alignment and minimize heat distortion.

Difficulty Level

Difficulty level: Medium.

The project is suitable for DIY builders with basic to intermediate aluminum fabrication and welding experience. Previous professional boat-building experience is not required, but the builder should be comfortable cutting, fitting, and welding aluminum plate and structural components.

Power and Transom

The skiff is designed for a 20″ (508 mm) long-shaft outboard engine. The transom has a 12° inclination angle, and the recommended engine range is 10–40 HP.

This allows the boat to be fitted with a smaller motor for economical use or a more powerful outboard for heavier loads and stronger performance.

Perfect For

• Lake and river fishing
• Recreational boating
• Inland and sheltered waters
• Fishing with generous onboard storage
• General utility use
• DIY aluminum boat builders
• Outboard engines from 10 to 40 HP

Instant download available after purchase – start building today!