During World War II, when the icebreaker Tarmo was hit by a bomb, the navigating deck and most of the cabins were destroyed, but the hull did not even spring a leak.
Otrā pasaules kara laikā, kad ledlauzim Tarmo trāpīja bumba, vadības klājs un lielākā daļa kajīšu tika izpostītas, bet korpusā neradās pat sūce.