I dont see a problem with that for the big ATBs that are coming out. Thats about what we had when I was at TECO Ocean Shipping a 9 or 10 man crew was normal. Where I work now if we have a tow over 600 miles the company usually has the crew set up like this: 1 Capt 2 Mates 1 C/E 1 AB/utility and 1 AB. It works for us. And while running as a 2nd mate we work a 4/8 watch and still get our normal pay. I might not be able to sleep 16 hours a day but you better believe I will be in my room for 14 out of those 16 hours!!