Posted 09 May 2012 - 10:56 AM
Hello Eamon Dias,
Without entering a very sophisticated and/or technical details, let say that a ship is build for a specific purpose and also (in general) for specific areas of navigation (seas and/or oceans).
The wavelengthand the amplitude (see Wikipedia) are quite different from sea to sea, and thusthe length, the width, etc. of the ship must be adapted to those circumstanceswhen building it. Thewaves, currents and tide systems in the the North Sea is not the same than the one in the Med. or the Atlantic.