I will try to give a decent critique here since I am familiar with military photos since I was a 96D2T in the Army.
First it is very dramatic obviously out gunned against what looks to be a larger and better armed opponent. I would think that the wheel house would be better armored since that is where the captain would be during an engagement, but I have to remember this was a portrait of a ship that sank pre-20th century.
The artwork on the bow is good, I do remember ships having that. Also the primitive style of range finding on the fore turret is a nice touch which few would see.
All in all this is a very good work in my opinion.