On a CE-marked boat, the electrical system was built to ISO standards, and ISO 13297 is the one that covers it. A surveyor working on European boats meets it where an American surveyor meets ABYC E-11.
What it covers
The scope as published by SIS: the requirements for the design, construction and installation of DC and AC systems on small craft. That means extra-low-voltage DC systems at 50 V DC or less and single-phase AC systems up to 250 V. The current edition cancels and replaces ISO 10133, the old DC standard, and the earlier ISO 13297 for AC.
It excludes electric propulsion, covered by ISO 16315, conductors that are part of an outboard engine assembly, and three-phase AC up to 500 V, covered by IEC 60092-507.
What surveyors check against it
The same items as on any electrical survey: overcurrent protection at the battery, conductors and their protection, panels, socket outlets, shore power and the owner's manual. One figure surveyors cite: MarineHowTo gives the ISO distance for the first fuse from the battery as 200 mm, close to ABYC's 7 inches.
Citing it in a finding
On a CE-marked boat: "fit overcurrent protection within 200 mm of the battery, ISO 13297." Where a boat was built to ABYC, cite E-11. Citing the standard the boat was built to keeps the finding fair to the builder.