Correct form or not, there are all sorts of goods and services for sale online, (w/ more than a little bit of help from eBay), that are prefaced w/ e or e- and that aren't online/net related and have never physically been online or been seen online, so I don't see that as being a major drawback IMHO. Where I agree w/ Jane, is that cruises isn't the best fit w/ net.
Google shows 7,920 for "ecruises". ecruises.com tops the list and has already carved a little niche in the etravel market.
Could be a travel site w/ vacation cruise info, schedules, and online booking, similar to what the .com is doing.
$30+/-
Darren, just close your eyes and picture "surfing", except on a much larger platform.:hehe: If that doesn't work, maybe try one of those crazy rigs I remember riding that ran between Dover and Calais the last time I was closer to your part of the world. :tri: