Hi there,

Welcome to FlyerTalk.

I have not heard of such a thing as "seaman's tickets" before, but I think that you are being hit by some of the fare classes used by KLM.

http://www.klm.com/travel/ch_en/flyi...e=txt.partners has all the detail, but the short answer is that if your ticket is booked in V or N class, you only earn 25% of the miles. It is quite possible that if you book tickets at different dates, your colleague and yourself may have paid different fares. And it is totally possible to have a flight out in one fare class, and the return in another fare class, depending on availability.

It's not nice, but, unfortunately, those are the rules of the game these days.

Cheers,

GenevaFlyer