Canals ship size limit?

[Rafard23]

Is there a size limit for ships passing through a canal?

[Ninjafroggie]

not to my knowledge, though there should be, but it would be unlikely you would hit that limit until you start building super BBs.

The size of the panama canal was one of the major design factors in the US fast battleships...they all had a 108ft beam (plus a couple inches), as fitting through the canal was one of the design requirements. All of the 'standard' class battleships could fit through the canal no sweat, as could the yorktown and essex carriers. However, the Montana class would have been too large to fit through the canal, at 121ft beam, as were the nimitz class carriers. A third set of locks that are 1400ft long and 180ft wide were planned to be built and completed by 2025, though I'm unsure on the status of that project. The suez canal doesnt have locks, and the kiel canal only has 107ft wide locks, but it's not a far trip to go around denmark, which is why container ships are frequently built to 'panamax' specifications....as large as they can be and still fit through the panama canal. All the other controllable passages in the game are actually narrow straights, not canals, and are actually plenty wide for any ships you could possibly build.

[The Emperor Of Mankind]

Used to be you could screw with settings via a note pad. Screwing around enough and you'd find out that the shipyard apparently has a max build size of 1,000,000 tons. I'm not sure if the devs ever plan to give us somthing that massive, but if they did, the canal would have to be massive.

[vanDyck]

Historically the german H-class (H-39) would have been to big for the baltic see canal, the Iowas were the maximum fitting through panama at their time.
One reason for the yamatos was to force the USA to build BBs so big that they wont fit through panama anymore so it would take longer to get them from coast to coast.