No, they aren't gunports. They didn't even open – they were pure decoration and painted on!
The tradition started in Napoleonic times when merchant ships took to painting dummy gunports on the side to discourage enemy or pirate attack. In later years, many merchant shipowners carried on the tradition of painting their ships with ports.
The Alice A. Leigh was made of steel, by the way, although most people seem to have got the impression that sailing ships were always made from wood. The last big wooden sailing ship built in the UK was the Torrens completed in 1875 and even that had an iron frame with wood planking over it. After that date, they went over to iron hulls and eventually steel. Lots of little wooden sailing ships, mainly coastal schooners, continued to be built after that though!
Glad to have been able to help.
Bob
Edited By Bob Wilson on 07/08/2012 13:25:51