The J/28 is a small recreational keelboat, built predominantly of fiberglass, with wood trim.
It has a fractional sloop rig, an internally-mounted spade-type rudder and a fixed fin keel.
It displaces 7,900 lb (3,583 kg) and carries 3,000 lb (1,361 kg) of ballast.

The boat has a draft of 5.00 ft (1.52 m) with the standard keel fitted.

The boat is fitted with a Japanese Yanmar 2GM diesel engine of 18 hp (13 kW).
The fuel tank holds 20 U.S. gallons (76 L; 17 imp gal) and the fresh water tank has a capacity of 35 U.S. gallons (130 L; 29 imp gal).
The J/28 is a small recreational keelboat, built predominantly of fiberglass, with wood trim. It has a fractional sloop rig, an internally-mounted spade-type rudder and a fixed fin keel. It displaces 7,900 lb (3,583 kg) and carries 3,000 lb (1,361 kg) of ballast.
The boat has a draft of 5.00 ft (1.52 m) with the standard keel fitted.
The boat is fitted with a Japanese Yanmar 2GM diesel engine of 18 hp (13 kW). The fuel tank holds 20 U.S. gallons (76 L; 17 imp gal) and the fresh water tank has a capacity of 35 U.S. gallons (130 L; 29 imp gal).
J/28