1 For the purpose of compliance with annex 1 to
the Convention in respect to organotin compounds
Small quantities of organotin compounds acting as a chemical catalyst (such as mono- and
di-substituted organotin compounds) are allowed, provided that they are present at a
level which does not provide a biocidal effect to the coating. On a practical level,
when used as a catalyst, an organotin compound should not be present above 2,500 mg
total tin per kilogram of dry paint.
2 For the purpose of compliance with annex 1 to
the Convention in respect to cybutryne
2.1 When samples are directly taken from the hull
It could be expected that the distribution of the remaining anti-fouling paint on the
hull surface is not uniform. Due to hull design and consequent action of the sea water
during the service life of the paint, the paint may not have uniformly eroded, some
parts in the hull may still have some paint, other parts may not have any paint left.
Therefore, the brief samples taken from the hull surface should be representative of the
anti-fouling system applied. Average values of cybutryne should not be present above
1,000 mg of cybutryne per kilogram of dry paint. Below this level any remaining
cybutryne is expected not to create a negative impact to the marine environment.
2.2 When samples are taken from wet paint containers
Cybutryne should not be present at a level which does provide a biocidal effect (i.e.
average values of cybutryne should not be present above 200 mg of cybutryne per kilogram
of dry paint).