USN Battleship Boot Topping--an example.
This is BB-64 dressed for the Holidays
As a museum ship, she has no ammo, fuel, or other stores, nor crew aboard, about as light as she can ride.
Note thos numerals are each 6" (15.24cm) tall, and spaced at one foot (12" or 30.48cm) apart.
Form previous visits to the Whiskey, there's about two more feet (60cm) below th ecurrent waterline.
Or about 14' (427cm) of boot topping.
This reflects how the Iowas were meant to be the true center of a Battle Group, with extra fuel and stores available to the escorts. Along with the cumulative effects of fire missions.
Coinside a short of engaement of just ten rounds per barrel. That's ninety rounds at about two tons each weight expenditure--or about 180 tons (163tonnes). Which does not include fuel burned or other stores consumed.
At 1/350 that's 0.48" (12.19mm).
At 1/200 that's 0.84" (21.3mm)