I am considering going to school to pursue a career as a merchant marine officer, but am not willing to spend more than 30 days away from home at a time. Is this an unrealistic expectation? I have read about those who work 2 weeks on/2 weeks off, 30 days on/30 days off, 6 months, 8 months, etc… How difficult is it to find positions with 2 week or 30 day shifts, and and what cost to pay? I would appreciate any insight. Thanks.