In reference to this article, I think you have to blame the Vikings for this.
Anyone know why the right hand side of a boats correct name is Starboard? Well, those marauding fellows designed their longboats etc with a bunch of oars along the sides, then one at the stern (you know, the blunt end, not the pointy end) on the right hand side. This was called (in English anyways, I’m afraid I don’t quite remember my Viking all that well, it’s a bit rusty) the Steering board. Shorten that a bit, ya got starboard. Incidently, they always used to tie up to the wharf with their port side (left hand side for all you landlubbers) so as not to damage this.
Us mariners being such lovers of tradition, it wouldn’t really surprise me that this was still the reason why it’s over there.
Edited to fix link – CKDex