Are we playing "friendly robber"?

"For yourself or a gift, this set of 11 handmade, 3D trading ships are designed to replace the 2D trading ships in Settlers of Catan. This is a new and improved design, perfected after some play-testing.
Each ship is approximately .75" tall and the bases are 1.25" long and 1" wide, just the size to cover over the ships on the seas around the island of Catan.
This 11 ship set includes 1 ship each that trade wood, wheat, brick, and ore; 2 ships that trade sheep; and 5 ships that trade any resource 3:1. Each base is a light blue, to blend into the water in the sea around Catan. A 3D replica of the building resource being traded by the ship is situated on the base so that the entire table can see their potential ports!
To use these ships with the 4-player game, please remove one sheep ship, and one 3:1 ship. Include those two ships if you intend to play with the 5-6 player extension.
These ships are compatible with both the base game and the Cities and Knights expansion set."

Found at EpicCycleDesigns' Etsy shop.