Catholic mass on semester at sea

[InThePew]

The “well no mass is available” is only a valid excuse if you are traveling and physically can’t make it or are sick. Not because you chose to go somewhere without a church, that was your choice and the obligation does not magically disappear. Nobody is forcing her to go on this ship where no mass is available.

That’s like saying that you shouldn’t join the merchant marine or navy because (much like SAS) it places you in a situation which prevents you from attending mass for extended periods of time! In the same way, it’s easy to envisage a number of occupations/activities in which a similar situation would arise. This is only a problem if it’s being done for the purpose of avoiding the obligation which, in the OP’s case, clearly it’s not. Otherwise, a whole range of activities and occupations would effectively be off-limits to Catholics.