This is the 3478th most frequent Swedish word.
båtolycka
Boat accident.
The word 'båtolycka' is used as a noun referring to an incident involving a boat.
En båtolycka inträffade på sjön i går.
A boating accident occurred on the lake yesterday.
Here, 'båtolyckan' is in definite form, specifying the accident that has already been mentioned.
Efter båtolyckan behövde räddningstjänsten arbeta hela natten.
After the boating accident, the rescue service had to work all night.
In this sentence, 'båtolycka' is used in indefinite form, referring to any potential incident involving a boat.