Size Description:

Size 1: fixed width of 45 cm， a captured ship is 10 meters， the ship is 20 m 2， 3 is 30 meters once analogy， shipping and constantly open，

2 Size: Width: 90 cm fixed， captured a ship is 5 meters， two shipments is 10 m， 15 m 3 is a analogy， shipping and constantly open，