International Organization for Standardization (ISO)
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ISO 13591:1997
Scope
This International Standard specifies requirements for the design, materials and testing of portable fuel systems with a rated capacity of 27 | or less for carrying and storage of flammable liquids used for outboard motors installed on small craft with up to 24 m length of hull.
It does not apply to pressurized fuel systems.
ISO 13591:1997 history
1997ISO 13591:1997 Small craft - Portable fuel systems for outboard motors