capsize
verb (used with or without object)
to turn bottom up; overturn: With a strong kick he capsized the stool.
Used to describe an ongoing action or continuous state that was happening at a specific time in the past.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
As soon as the disaster was perceived, an officer ran to the ship's captain to inform him that it was capsizing.
From Grace Darling Heroine of the Farne Islands by Eva Hope