I'd believe it.
I vaguely remember some of my cousin's stories about the Naval Academy when he went through it from 1986-1990....The couple times I saw him when he would come up to my parents house, he would do a LOT of laundry, play some video games with me and my brother and sleep about 18 hours a day....
0600 Reveille
0630 Breakfast
0700 Relieve the Watch
1200 Relieve the Watch
1200-1230 Lunch
1230 Damage Control Training Team Brief - Wardroom
1300 Damage Control Drills
1500 Navigation Brief For Entering Port - Wardroom
1600 Station UNREP Detail
1700 Underway Replenishment
1900 Flight Quarters
2100 Station the Navigation Detail
2300 Station the Special Sea and Anchor Detail for Entering Port
2400 Moored - Jebail Ali, UAE
0130 Liberty Call
They need their sleep. It's only downhill from there.