[CaptEvan]

Hey Bill,

Here is an excellent design summary of aluminum vs.steel.

http://www.kastenmarine.com/alumVSsteel.htm

Evan

[Billy1119]

While the main reason for this thread, the research paper, has been completed, I do think this is a good topic that can and has led to some interesting information - certainly a lot of stuff I'm not all that familiar with. So, I appreciate any continued contribution to this thread. Thanks, Evan, looks like an interesting read! I'll see what questions/comments arise once I get through it.

[JWY]

Originally Posted by casper

...my hull is of corten steel and was galvinized inside and out and two part primer and paint applied and have no rust problems...
C

Casper - What manufacture year is your boat and in what country was she built? Did the yard build other vessels from Corten and do you know why in particular Corten was the hull material chosen?How is she insulated and have you had a peek beneath this layer? What is the superstructure material? Please tell us more about your vessel. I sold one trawler with a Corten hull and am solely interested in increasing my knowledge of Corten steel boats. Thanks!

Judy

[MaxResolution]

MK's -ultra clear explanation about the properties of steel and aluminum play well into this discussion about hull design criteria. Overall, I'm far more interested in using Aluminum as a result. Floating up here in the hills, I've seen more planing, lighter, -service-duty vehicles, like canoes. (The ones that didn't float, often had been displaced by flying through a tornado.)

For expediency, one assumes we're talking about the use of homogenous materials at both the skin and the ribs. What about applications where these differ? Like what happens as we use an aluminum frame within, and particularly to strengthen a fiberglass, or multi-core hull?

What about castings and extrusions, alternating these weights to meet the local stress-positions? ...best of both worlds.

Finally, we've skimmed past the topic of the galvanic properties of the aluminum hull, and particularly in relation to any secondary steel structural elements, such as those that may receive constant exposure to salt water spray. Paints, anodizing, anodes...?