Originally I wanted those yellow boxes to be nothing more than something aesthetic, but I thought maybe they could be some kind of small shielded power plants for each individual plasma gun. So I tried to make them look like they had some type of exhaust ports.
The model itself started out as nothing but a Southampton class destroyer, but then I added a hangar, some newer engines and a few details. I got this idea after watching a television program about different types of converted destroyers during WW2. Some were designated into fast troop transports or minesweepers.