- Who
- Coast Marine & Industrial Supply Inc.
- What
- 97.5 metre(s)
- Where
- United States (San Francisco)
- When
The longest ladder is 97.5 m (320 ft) long and was made by Coast Marine Industrial Supply Inc in San Francisco, California, USA. Designed for debarkation from ships and oil rigs to lifeboats, liferafts or other life-saving appliances, it was approved for use by the United States Coast Guard in June 1999.