Its difficult to rate an anthology, as the stories are rarely of uniform quality, for obvious reasons. Out of the 20-odd tales here, there are 5 or 6 I truly enjoyed, 2 or 3 I skimmed over out of duty, and the balance were readable, if you had time to kill.
Pirates of all types are found in this collection: space pirates, ice pirates, supernatural pirates, pirate pirates, and last but by no means least, rat pirates.
Boojum, the opening tale by Bear and Monette is one of the best in the book, but I also found Garth Nix and Naomi Novik did sterling work also. Suara Sea by Flint and Freer was fun, but my favourite story was "A cold day in hell" by Paul Batteiger. The imagery conjured up by that tale was superb and its setting unique: to call it Pirates on Ice is not to spoil the story but hopefully to intrigue. The world found in that story could support a whole novel, if not a series of them.
The nonsense tale "The Adventures of Captain Black Heart Wentworth" by Rachel Swirsky was also great fun, but sadly unfilmable, save by Pixar. Thats not to say a story should be filmable to be a success, but I challenge the reader not to regret being unable to see that tale on the big screen.
For the price, there are books of uniformly higher quality available, but as far as anthologies go, this is a solid one, assuming you like pirates (and if you don't, you should).
A great gift for talk like a pirate day, or to any Pastafarians who hold pirates in reverance.