How many alarm signals are there for ship abandonment?

Engine room sound and light alarm, alarm bell whistle seven short one long.

The warning signal in case of fire on the ship is

Bow fire: alarm bells and whistles sounded. After playing continuously for one minute, the bell rings 1.

Fire in the middle of the ship: alarm bells and whistles sounded. After playing for one minute, the bell rings twice.

Fire at the stern of the ship: the alarm bell and whistle will sound once, and after continuous playing for one minute, it will sound three times.

Fire in the engine room of the ship: the alarm bell and whistle will make short sounds, and four short sounds will be made after playing for one minute.

Superstructure fire: alarm bells and sirens will make short sounds, and five short sounds will be made after playing for one minute.

Generally speaking, oil pollution accidents on ships in China can be sounded: alarm bells or sirens are short, long and short.

Someone fell into the water. Should ring: the alarm bell and whistle should ring for one minute.