[1][2] From 1969-1972 the company sold some LA-4s modified under a Supplemental Type Certificate as flying boats, without landing gear, but with removable beaching wheels, under the name Lake LA-4S Seaplane.

[1][2][3] In 1970 a 200 hp (149 kW) fuel injected Lycoming IO-360 engine was fitted and the resulting aircraft was named the Buccaneer.

This model replaced both the LA-4 and Seaplane in production and has a higher cruise speed as well as 200 lb (91 kg) increased gross weight.

[4] The LA-4 is a cantilever, shoulder-wing monoplane amphibian with a single-step all-metal hull with retractable tricycle landing gear.

It is powered by an Lycoming O-360 180 hp (134 kW) piston engine in pusher configuration, pylon-mounted above the hull.