[DelphiUniverse]

Originally Posted by robbo180265

Perhaps this link may also help chaps *grabs popcorn*


http://www.heiszwolf.com/subs/tech/tech01.html

Basically, there are two ways to submerge a boat: dynamic diving and static diving. Many model submarines use the dynamic method while static diving is used by all military submarines. Dynamic diving boats are submarines that inherently float that is, they always have a positive buoyancy. This type of boat is made to dive by using the speed of the boat in combination with the dive planes to force the boat under water. This is very similar to the way airplanes fly.

hehe