From Tom Backer Johnson
I came across the following somewhat puzzling statement in your article on “rudderless ships”: “Pod drives were first used on icebreakers in the early 1990s. These work best if they can smash ice with both sterns as well as the bow” (27 March, p 24).
Now, having grown up by the sea, being used to boats, and living in a house with a good view of a harbour, I wonder how a ship with two sterns but only one bow would look? Something between a catamaran and a normal ship?
Bergen, Norway
