Some great things happened in 1969, and one of the interesting vehicular developments to come out on the lots that year (1969-1970) was this boat-slash-camper. It’s called a Terra Marina, and it was made by Aqua-Trail (interesting name).
There’s actually a few of these around still. They look like a trailer, yes, but then they have two pontoon boats underneath them. The pontoon boat in the back serves as a deck!
And the boat motor is mounted to the back of the deck/ back of a pontoon boat.
It kind of seems to me like anyone could make one of these boat/camper RV units.
The way they set it up, they put the trailer under it all so that the wheels of the (2-wheel trailer) sit between the two pontoon boats.
The company (Aqua-trail) made around 35 units of these in the Sacramento area.
Tin can tourists explains how you launch them: “The trailer was designed to be used both as a houseboat and camping trailer. It is totally self-contained. When brought to lake the sides are lifted and the pontoons slide out and are secured. The entire craft is then released to roll into the water. It has a top speed of 7 knots and is easy to control.”
The RV has all the amenities normal RV trailers have: bathroom, shower head, kitchen, furniture, table,