

A well-known sailing ship once used for ocean cleanup missions sank on Sunday evening in the Oakland Estuary, prompting a major emergency and environmental response.
The incident happened around 6:13 p.m. near the 2500 block of Blanding Avenue in Alameda. The Alameda Fire Department received multiple reports about a large vessel taking on water.
When crews arrived, they found a massive, steel-hulled clipper-style sailboat, later identified as the SV Kaisei, almost fully submerged while still moored at the dock.
The sailboat, approximately 150 feet long and built in Poland in 1989, has been tied up near the Nob Hill Foods parking lot for years. It has a steel hull and was designed for international missions, originally used in Japan before being acquired by California-based nonprofit Ocean Voyages Institute.
Fire crews quickly used their fireboat to move a nearby vessel to safety and then cut the sinking Kaisei free from the dock to prevent it from
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