Jim W.
Yelp
I'm giving this 5 points as it exceeded expectations. I wasn't sure how I would like this museum, but it did a good job of explaining the exhibits in reasonable, interesting detail in multiple languages. And they included the audio tour with the standard admission price. We visited on a Monday afternoon, which did not appear to be a busy time for them.
First, my only gripe about the museum: we had a bit of trouble with the tickets (which, btw, were 10 Euros). We paid, tried to enter, and found that they were supposed to have given us the tickets. Maybe the ticket agent just put them on the counter and expected us to take them, but I hadn't seen that. A 'here are your tickets' would have helped. We then proceeded to the turnstile where they took the tickets and laid them on top; we entered. Then they chased us down to give us the tickets. Crimony, do you or do you not want me to keep these or to keep them yourselves? Thankfully, things improved after that.
The auido guide was pretty good, describing some intro areas and letting you then explore and read from the signs (Spanish/French/English) after that. There were a couple of short films presented. The museum building itself was from the late 1200's and was the place where they constructed wooden naval vessels (galleys, etc.). It was huge and did look old. They showed how it had been re-done multiple times (in an animated segment, that was also interesting). The centerpiece is a full-scale replica of the flagship (constructed in Barcelona, for the 500th anniversary) from the Battle of Lepanto in 1571. It is a 59-oar galley, almost 200 feet long! They had a lot of info about galleys (the most memorable was that they could never surprise an enemy due to the awful smell that the galley produced; if you can smell a boat at sea before you can see it, that must be bad...). They had other exhibits too; one area had display cases made from actual modern shipping containers, which was a cool touch. In all, this was a worthwhile stop.
If you're into history or sailing, you should definitely visit this museum. It is only about 2 blocks from the nearest subway stop, is convenient to the harbor front including the Columbus monument, and is also close to the start of the Ramblais, which is also worth exploring.