From: Connecticut, USA
The abbreviations are on page 160 of the manual. As for what they do they're described in various sections of the manual. Bear in mind WPO has no CS, DMS, or CLAAs, though since the manual has come out they have added an AMC (Armed Merchant Ship) to the mix. There are also Q-ships, but I believe they show up as AKs (because they're sneaky )
The main workhourses are AKs, APs, and TKs. AKs and TKs come in 2 sizes, small and large, while APs come in 3. The exact amount of each size is determined by their nationality.
< Message edited by Connfire -- 3/9/2013 5:32:58 AM >