This is the 15273rd most frequent Korean word.
배의
"배의" means "of a boat/ship" or "of the stomach" depending on context.
Here, '배의' is used as a possessive form, describing something that belongs to or is related to the '배' (ship) by attaching '의' to denote possession.
배의 무게는 생각보다 가벼웠다.
The ship's weight was lighter than expected.
In this sentence, '배의' again shows possession, specifically relating the speed to the ship.
배의 속도가 점점 더 빨라지고 있다.
The ship's speed is becoming faster and faster.
Similarly, '배의' functions as a possessive here, indicating that the shape belongs to or pertains to the '배' (ship).