I know about "Write to File". That's where the .txt files spotted by @Jack Rackham came from. 
I may have another try at transplanting some other ship's masts onto the battleship. Judging by the Y co-ordinates of some locators, the masts of other battleships may be too short compared to those already on "Battleship4", so I may try taking masts from something larger. The problem is still matching locators from the masts to those on the hull, which is where I got stuck last time...
Simply copying locators might not work. The replacement masts will be a different size from the original, so any locators imported onto the new masts are liable to be somewhere in mid-air. On the other hand, I suppose if I do that, and then look at the result, it might be easier to then figure out which ropes are in the wrong place and correct their co-ordinates rather that try to cross-reference between text files to figure out which locator on the new mast is equivalent to which locator on the original.

I may have another try at transplanting some other ship's masts onto the battleship. Judging by the Y co-ordinates of some locators, the masts of other battleships may be too short compared to those already on "Battleship4", so I may try taking masts from something larger. The problem is still matching locators from the masts to those on the hull, which is where I got stuck last time...
Simply copying locators might not work. The replacement masts will be a different size from the original, so any locators imported onto the new masts are liable to be somewhere in mid-air. On the other hand, I suppose if I do that, and then look at the result, it might be easier to then figure out which ropes are in the wrong place and correct their co-ordinates rather that try to cross-reference between text files to figure out which locator on the new mast is equivalent to which locator on the original.