Creosote....that's exactly the idea.
I have long believed in the benefits of stored energy in the form of compressed air on my "Dream Boat"...not the only stored energy of course.
Bataan ...I'm no where near clever enough on the computer to come up with a computer generated form...but I'm a...
Recently I was in a small village out side of Shanghai where many of the small (16 to 20ft) sampans were made of cement...these were smaller than any other cement boats I've seen.....also some damn big ones.
Could be...I haven't exposed them to sea water.
I'm not really figuring on buying off the shelf...its probably all custom.
There seem to be folks out there with the expertise that you can work with.
The tracks would be rubber, I'm not sure why the life span would be shorter than that of a tire or the tube on a shaft log?
I've had tracks on a Jeep that I've used all seasons for about 5 years and also on a couple quads...I'm very impressed with their resilience.
The jeep tracks have carbon...
I recently contacted a well known NA and asked about design costs for a 20-22 meter sail boat...He confirmed 100 USD an hour and said that a good rule of thumb is 8.5%.
I'll jump in here....Ive also been doing some modeling/messing around with this idea.
Some thoughts....
The boat would beach stern first so that the bow is always to any surf, that means that the rudders (in my case 2) have to fold up out of the way...something like the way a Hobie's do...
I repowered with an 84hp J444 Mermaid Marine engine from the UK.
Its the same engine they use in JCBs.
http://www.mermaid-marine.co.uk/HTML/MermaidSummary.htm