How did they get "King Kong" back to New York?

The 1933 movie doesn't show how King Kong was transported, but according to the script:

   

They possibly towed the raft with the ship, all the way to New York.

(Maybe Peter Jackson thought using a raft is a silly idea and therefore didn't include it in his version)

However, the raft idea was used in King Kong vs. Godzilla:

   

In the 1976 version they used an oil tanker to transport Kong: