We are to operate a strict "Same route, same date, same fare" policy. Whether you book three months or three days in advance, you can always expect to pay the same set fare for the date of travel. We won't penalise you for peak or seasonal travel.
The problem with this, and the reason why as far as I know no airline operating in a competitive environment actually applies flat fares, is that you lose early-booking traffic (because you're far more expensive than the advance-purchase leisure fares to Amsterdam) and you don't adequately compensate with revenue from late-booking fares.
pug, I do agree with you that if there is specific marine-oriented traffic, there may be a potential business demand - as long as the frequency is competitive. However one of the airline's key selling points seems to be that it gives you a fabric bag as a souvenir - that doesn't really strike me as a compelling marketing proposition for port/oil business travellers...