The 110 meter long, 1642 dwt passenger vessel Kapella released oil pollution in the Sottunga Bay, Finland, while bound for Kapellskar from Turku.   The oil spill was spotted by a helicopter and was reported to be 35 kilometers long.   The vessel was detained until the oil leak could be stopped.   The vessel completed repairs and proceeded an hour later.   The Coast Guard was unable recover the pollution as it was too scattered.   The amount of pollution released is not known.