Hi Charisma:
This is not exactly what you asked but .... I have restored 7 old sailboats and at least that many trailers. Northern Tools or Tractor Supply will usually have a good selections of winches of various sizes and some with multiple speeds and/or breaks. I don't think you need a breaking winch unless you launch on a really steep ramp.
Beyond that, I'd get the largest one that fits your trailer and budget. No matter what some guys say, Bigger is Better. Unless it is too big....
After you remove the old winch, take a square of cardboard lay it over the old bolt holes and (using a pencil) make a template of the hole pattern....just punch holes through the original bolt holes into the cardboard.... Take that piece of cardboard with you and make sure your new winch will fit the original hole pattern. Getting a winch that already fits will save you a lot of time and work. I've made that mistake before and had to drill all new bolt holes into my trailer.
If that is not to your liking and you really just want to order the same winch, I can look on my trailer and see if there is a rating stamped on the winch. Mine is parked in my yard.
BTW: I really like your "To arrrg is Pirate" tag. Funny.