It is box shaped object with base 50cm x 40cm. 60% of base can be used by magnet.
Dimensions and current is what I need.
Basically, I need to know if it possible to put electromagnet in that box to hold it on vertical steel wall.
Thanks for prompt reply.
I put 20 kilos but that is not fixed weight (probably it would be around 10 kg). I wonder how big and strong electromagnet should be? Surface is on ship so there is paint on it, though there is no 147 layers and thickness, I think is not so great to make some trouble for...
Thank you for reply. I was not precise enough in my first post. I want to pump out water from tank which is on seabed at 100 meters not to surface but outside tank directly to the sea at 100 meters. It si not submersible pump because it's funcion would be to prevent tank to be overflowed...
I know that there are ballast pumps with capacity of 1000 cubics/hour and power of 7.5kW. Now, how much stronger it has to be in order to pump out water from for example tank which is situated at depth of 100 meters?