This Vanguard 14 was built for reservoir survey project and uses propane for fuel but it can easily be changed to gas. This hovercraft can carry 750 lbs., cruise speed at 25 mpg, and has a top speed of 34. Engine frame is stainless. The galvanized “Rapid Deployment” trailer, included, will allow the Vanguard hovercraft to easily load and off load in almost any launching situation. Tough and lightweight, the Rapid Deployment trailer features a welded, hot dipped galvanized, box steel frame with a pressure treated tongue and groove plywood deck. As a result, the trailer will have a long service life including saltwater use.
First day at work with the water district
Current photo on fly/on off trailer
The designer has taken 500 mile trips through the Puget Sound with an 18 hp version of this craft. You can read about the trip here. In fair conditions you can travel in open water between islands. Explore areas rarely seen by others such as river deltas, estuaries, mudflats, rivers during low water and high.
If you need a larger used hovercraft for sale then consider the Explorer 24×10 here.
If you want to build your own from scratch this Surveyor model is very similar.