I came up with over 3 feet high above the floor With the slant of the windshield raked back, if a wave of even 2 were to hit the Stalwart the water will come over the top of the windshields and into the boat. Speed, the Stalwart is slow like the D.U.K.W. speed is mandated for safety due to the tide and speed of the current at the tide change. Dukw s are banned in certain locations as are Stalwarts. And if the old brakes are kept that came on the Stalwart they are old and antiquated, parts are also not reliably found and certainly not at the local store as is all of our parts are. The U.S.Coast guard may not allow the Stalwart on a coastal route at your location.
Highway speeds on a hydraulic system are slow.
The Stalwart has been advertised as only 40 mph. This is under the minimum speed S.C. required. The conversion as shown on the web site is only a 4 wheel driven unit and not 6 as designed. These are held together by only a band clamp inside the hull. If the clamp fails the vessel will likely sink in less than 60 seconds.