We have four of those "stations" on the ship. Each consists of 3 blocks of varying sizes, all mounted pivot-able on a common axle.
Each block is for a brace. A brace out here is a line/rope that will pull a yard and thereby altering the angle of a sail in relation to the ships hull. That way you can adjust the sails to perform if you alter the course.
These particular braces blocks are located on the port side on the main deck, and are connected to the three lower sails on the fore mast.
The lower sail is named the "Fore sail", and its brace is "fore brace".
The sail just above is the "Fore lower topsail", and its brace is " fore lower topsail brace"
The third sail from the deck is the "Fore upper topsail", and its brace is "fore upper topsail brace" (what a surprise!)
The block for the fore sail brace is the biggest one, it measures 12" in height, 15.5" in length and it is 4.75" thick.
All three blocks are made out of mahogany.
Port fwd braces blocks station.
The author of this blog
(we had a pirate cruise for kids today)