Like all of Timothy Dalton’s clothes in Licence to Kill, his royal blue t-shirt is a size too large. Or if judged by current fashions, Dalton’s shirt is two sizes too large. Even though baggy clothes were fashionable in 1989 when Licence to Kill was made, nobody else is wearing such large shirts. This is mostly likely a shirt that Bond found rather than bought, unless the store where Bond shopped was sold out of his size. The shirt looks even worse when it’s wet, and the large size makes it even more cumbersome for swimming in than a t-shirt ordinarily would be. The shirt has a large crew neck, an open patch breast pocket and sleeves down to his elbows. Dalton wears full-cut dark blue jeans, which one of the rare occasions Bond wears jeans. He doesn’t wear shoes or a belt.
In this scene Bond is likely attempting to dress like what the henchmen aboard the Wavekrest wear without having their actual clothes to wear. Bond’s shirt is a little darker and it doesn’t have the Wavekrest emblem on the left side of the chest that the henchmen’s shirts have. Bond’s jeans are a little darker than the security guard’s jeans and have a fuller cut compared to the henchmen’s bell-bottom trousers.