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Holding tanks assessment

Greeting.

I am considering purchasing a Robert Tucker 51 (1987 steel). My most pressing concern is the holding tanks. They are made out of mild steel and there are no 'view ports'. There are four of them, each a 1000 litres. Two for water and two for deisel. The current owner does not know how the tanks were originally treated. Is also seems that the hull makes up part of the tanks (I have seen them described as wing tanks). If visual inspection is not possible, is there any other method of accessing the state of the tanks?

If the tanks turned out to be corroded then what are my repair options?

I have been told that I can have the hull thickness measured. This seems to involve only spot measurements every meter or so. Would this be sufficient to assess a weakness in the hull caused by corrosion on the inside of the tanks? Is there a better method?

Any advice would be appreciated.

Regards Warren

 Warren
Nov 3
2006
You can have them ultrasonically tested, as you should for the entire hull during the survey process. If you buy it and want to add some inspection ports, check these out. I used them in my fuel tanks and am very happy with them. http://www.seabuilt.com/ Keith
Nov 4
Get someone to put a camera down in them. There are video/light set ups on flexible cable that is used to inspect things that can not be reached otherwise. I watched some guys use one to inspect a sewer line that ran under a building.

Warren wrote:

 jamesgangnc
Nov 3
   
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