How to Use "sank" with Example Sentences

1. The jubilee sank in puget sound bay last year .
2. My heart sank as I started walking towards it .
3. Marine geologists have yet to work out why the settlement sank .
4. South korea has responded vigorously to the results of an international investigation that proved north korea sank the cheonan , killing 46 sailors .
5. About 3.5 million tons sank off the coast .