In this section you can compare up-to 3 ships in the game, including those from the base-game and any DLC content.
The ships can be any class; from S to XL. You can share / save the comparison by using the share-code at the bottom of the page.
Equipment will not be saved in the share-code - this would generate massive long codes otherwise.
If you wish to share a build with another person, you will be better creating the build in the ship section (which also has a share-code).
Builds created there will store equipment.