I did a hitch in the Navy long before women were allowed to serve aboard ships. I would like to share some of my observations. When I was aboard a destroyer tender, we off-loaded ammo before going to the yards once, then loaded ammo when we got out. We had 100's of men handling ammo for 2 weeks each time. It may have only taken 1 dropped round to take out the whole ship. This was very strenous work. I doubt that I ever met a WAVE who I would have trusted to do the work we did safely. Even the smaller guys worked beyond what they may have thought their abilities were; not only for the safety of their shipmates but so as not to be labled a "non-hacker". I've been through firefighting training that was physically daunting, pushed to the limit by instructors who wanted to weed out anyone not up to the task. I doubt that civilian firefighters trained like we did. There were many more examples of incredably hard physical labor where everyone was expected to carry the load. I can't think it good for moral if some of your shipmates would be excused from all of this because they were lightweights. Before my youngest son went into the Navy, I told him how hard some of the things would be in bootcamp, drilling with your piece (rifle), the obsticle course, the punishment drills ("happy hour"), etc.. Guess what? The women train with the men now. No obsticle course, no rifle drills (they don't even issue them rifles anymore), no punishment drills, no real competition between companies now (they're not even divided into companies, battalions, and regiments anymore).
A man used to work for me who was in the Marine Corp Reserve. He was in a comm unit that was trained for amphibous landings under fire. They were basically supposed to come ashore, run up a hill, lugging all of their comm gear, set up antennas, radios, etc.. They had 1 woman in their outfit. Every time the did the actual combat training in the summer, the woman covienently had her period and was excused from the exercise. This really pissed off the rest of her unit who had to carry her gear as well as their own. Plus, no one had any idea how well she might perform in actual combat conditions.
Also, I am a big guy and I want to know that any shipmates nearby can carry me out harm's way should the need arise.