It could be so but I don´t know for sure. The album is a low resolution pdf and I can barely read the texts on it. Method D could also be a way of making room to move carriages along the deck for hoisting them out of the ship. The upper deck of Trinidad had 10 howitzers at the waist plus the 8 pounders for the remaining gun ports so I think method A should be the one.Would this be the way to secure the gun in good weather and the other one ( parallel to the side wall) during stormy weather?
I agree but the album is not a book but a series of huge plates binded togther. There is a new print of it at the original scale of the plates but its price is €700:It should be printed in new conditions and would be great to have translated into English