IIRC, both MT and FFS1 say that for every 6 people on your ship, you need a person to act as Command Crew. Thusly, divide your total crew by 6, and this is the number of additional command crew needed.
However, I have recently been browsing statistics about US Battleships over at warships1 and found that in general, there are anywhere from 10-20 enlisted to each officer.
One could make the argument that Chief Petty Officers, or even regular Petty Officers, are supposed to be included in this command crew, but I am not sure this is supported by the way ships are made.
In the Navy, Officers get staterooms. At worst, they pair up, though the Command Crew of a large ship (the Heads of the Departments and the CO and XO) get their own staterooms. (Small ships see this rule broken a bit, but the CO still gets his own cabin.)
Enlisted people don't get staterooms (excepting the Command Master Chief, the highest renking Enlisted person), they sleep in racks, or bunks as its listed in the books.
So, depending on the total crew complement of your ship, you should probably use a median figure of 1 per 15. Ships with less than 500 would tend toward the 1 per 10 figure, ships with more than 3000 would tend toward the 1 per 20 figure.
As to berthing...
CO and Flag always get their own staterooms. These are large staterooms, unless the ship is small, like a cruiser. XO usually gets his own stateroom, and it will probably be the same size as the CO's. These people use half their staterooms as an office.
Department Heads (typically 3-7 people) get their own small stateroom. Other officers get to split a small stateroom per 2 people. Marines will split such a stateroom among 4 officers. Note this is NOT hot bunking, there are 2 or 4 racks in each room.
Enlisted people will sleep in racks (bunks). Probably only on subs or old destroyers will you see hot-bunking, though I suppose a battlecruiser might do so as well if the spinal mount takes up too much of the hull.
A stack of 3 racks takes up 1 displacement ton, though Marines are allocated 4 racks in that stack, and the racks are correspondingly thinner since they don't really need the storage space under the rack itself.
However, I have recently been browsing statistics about US Battleships over at warships1 and found that in general, there are anywhere from 10-20 enlisted to each officer.
One could make the argument that Chief Petty Officers, or even regular Petty Officers, are supposed to be included in this command crew, but I am not sure this is supported by the way ships are made.
In the Navy, Officers get staterooms. At worst, they pair up, though the Command Crew of a large ship (the Heads of the Departments and the CO and XO) get their own staterooms. (Small ships see this rule broken a bit, but the CO still gets his own cabin.)
Enlisted people don't get staterooms (excepting the Command Master Chief, the highest renking Enlisted person), they sleep in racks, or bunks as its listed in the books.
So, depending on the total crew complement of your ship, you should probably use a median figure of 1 per 15. Ships with less than 500 would tend toward the 1 per 10 figure, ships with more than 3000 would tend toward the 1 per 20 figure.
As to berthing...
CO and Flag always get their own staterooms. These are large staterooms, unless the ship is small, like a cruiser. XO usually gets his own stateroom, and it will probably be the same size as the CO's. These people use half their staterooms as an office.
Department Heads (typically 3-7 people) get their own small stateroom. Other officers get to split a small stateroom per 2 people. Marines will split such a stateroom among 4 officers. Note this is NOT hot bunking, there are 2 or 4 racks in each room.
Enlisted people will sleep in racks (bunks). Probably only on subs or old destroyers will you see hot-bunking, though I suppose a battlecruiser might do so as well if the spinal mount takes up too much of the hull.
A stack of 3 racks takes up 1 displacement ton, though Marines are allocated 4 racks in that stack, and the racks are correspondingly thinner since they don't really need the storage space under the rack itself.