Boating trip.

So my husband has gone on a boating trip with his siblings for a few years now and wants to go again this year. He hasnt had more than 1.5 days off work in a row in months. (This is typically inbetween 4 days of 12-16 hour shifts). The time he is able to spend at home he uses to switch his schedule from nights to days or vice versa. On the days he works we usually get to see him for an hour thanks to his hour drive there and back (his schedule is usually fine but they've been forcing them in on their days off for months. He makes to much money to leave). I've been falling apart because of that schedule. I have no other support. It feels like I'm raising our kids alone. I also have PPD. We just had a baby 4 months ago. Now hes wanting to go on this trip. Spending a entire day of what little time he has off away from us. I'm talking 5 am to probably 9pm. I can be overbearing sometimes so I just want to get other peoples opinion. He works his ass off and I know he deserves a break but I'm a stay at home mom with no support. I definitely wouldnt get the same luxury of a day away. I just think this trip needs to be postponed until next year. What do you think? Idk if I'm wrong.