This one is definitely a bit of a change of pace for me. It focuses mainly on the small (usually between 300 and 1000 grt) cargo ships which have been a mainstay of the British isles and Western European ports since the mid 1850s. Lots of excellent historic photos.
I haven't posted to this thread in a while, so here are reviews of the last two books I've read:
Junkers Ju 87 Stuka Owners' Workshop Manual
Naval Anti-Aircraft Guns and Gunnery