Yes...however.
Not for the faint of heart...
My three children row, we have been involved with CREW for over 8 years now with a competitive program. Great sport, some very hard working kids. You will either love it or well just the complete opposite.
You can walk on just like any other sport; however, there are things you should know. Without going into too much detail I'll touch
ever so little on a few things.
1st. Are you long and lean in body. 6' is a good place to be. Yes you can be a little shorter (not much, like an inch at best) but the Navy has some really big boys, this includes the light weight. I have meet a few on the team.
2nd. If this is what you want, go to your local YMCA, have someone show you the "correct" way to erg. Start very slow and work your way up to a 2k, this will take time. About 3 or 4 months after building yourself up on the erg see what you can pull for a 2k. If you can pull around a sub 6:45 your getting there...but pull harder. When you think you pulled your hardest reach down and pull harder. !!MAKE SURE YOU ERG CORRECTLY!!
3rd. Check
http://row2k.com/ lots of information here. Take a look at photos of some of the D1 college kids. 8 rowers, the 9th smaller person will be the coxswain.
4th. If your going to do this be prepared to wake up before everybody else for morning workouts and when classes are over its back to the boathouse for afternoon workouts.
Are you applying this year? If not look into the Navy crew camp for next summer.
Good luck.