Thank boys. I'm glad you like the model thus far......
Hi Steve - Ignorance? Nah! Just an honest question and yes you are correct.
A U.Boat is basically a tube within a tube. The outer one has all the drain holes and water is allowed to come and go as it chooses. Even the conning tower has drain holes! The inner is the strong watertight pressure hull where the crew go about their business.
As the sub submerges water enters the holes in the outer hull and produces neutral buoyancy. When water is pumped out of the ballast tanks the sub rises and the water in the outer skin is free to escape through the said slots. That is why all model subs should have these holes drilled out.......
I'm lucky enough to have a real IXC/41 U. Boat close to where I live, so I have a great reference should I need it. It is a slightly different, later type from the one I'm modelling but the construction and general appearance is fairly similar.
Thank for the question.
Ron
Hi Steve - Ignorance? Nah! Just an honest question and yes you are correct.
A U.Boat is basically a tube within a tube. The outer one has all the drain holes and water is allowed to come and go as it chooses. Even the conning tower has drain holes! The inner is the strong watertight pressure hull where the crew go about their business.
As the sub submerges water enters the holes in the outer hull and produces neutral buoyancy. When water is pumped out of the ballast tanks the sub rises and the water in the outer skin is free to escape through the said slots. That is why all model subs should have these holes drilled out.......
I'm lucky enough to have a real IXC/41 U. Boat close to where I live, so I have a great reference should I need it. It is a slightly different, later type from the one I'm modelling but the construction and general appearance is fairly similar.
Thank for the question.
Ron
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