Like all of Timothy Dalton’s clothes in Licence to Kill, his royal blue t-shirt is a size too large by today’s standards. Within the context of the story, this is mostly likely a shirt that Bond found rather than bought. The shirt looks even larger when it’s wet, and the large size makes it especially cumbersome for swimming. 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.