What does the cryptic crossword clue "Vessel obtained from seabed with top broken (9)" mean?

The definition is "Vessel". The wordplay uses an anagram. anagram of SEABED + TOP = SPEEDBOAT; definition: "Vessel" The answer is SPEEDBOAT.

Vessel obtained from seabed with top broken (9)

Times Cryptic #28729 | 27 Across | 2023-10-09 flower