They are all rimmed cases, especially the larger one would give you a hint that it could be black powder rifle cartridge. The smaller ones could be handgun cartridges. But in the early teens and up until the mid 1930s a lot of ammo was made to work in a handgun or a carbine interchangeably. With the advent of smokeless powder and it's common use after that time, the rifle cartridges that would fit in a handgun were pepped up with more smokeless powder and then the boxes were labeled "For rifle use only". These rounds still bore the nomenclature of the original black powder loading such as .45-70, .44-40, .38-50, .32-20, etc. And these cartridges are still available today. So, with the corrosion in the salt water and part of the cases missing and no headstamps it's almost imposible to identify the exact caliber and when they were manufactured. That said, I pretty much agree with Tirediron. Monty