What a rattling good yarn with great characters, both above and below decks and a real down to earth feel. It reminds me of Alastair McLean in the way it grabs you and drags you straight into the story. There's plenty of detail, but not pages of it before any sort of action, or interaction of characters. Some ingenious ideas are used to good effect, look out for the 'E' boat incident. It's a fast paced, crash, bang, wallop of a story, that's obviously been researched well, but doesn't get in the way of the narrative. This looks like a series of Orca Team 'books' and I look forward to the next one in the series.