Might I suggest one more?
Take the captains and blend them into the grayscale photo of the battleships.  My rough thumb measurements show that will cover the first ship and part of the second.  Thus, move the line of ships slightly to the right and blend the two photos together.
Because I am at work, don't have Paintbruch, and don't have the original separate photos, I did a quick composite done in paintbrush for visual reference.  Those that have the original photos can more professionally blend them.
