Abstract: Fouling of a ship's hull is inhibited by an amine of the formula ##STR1## where R.sup.1 is a monovalent hydrocarbon group derived from a diterpene and R.sup.2 and R.sup.3 are each independently hydrogen, an alkyl group having 1 to 18 carbon atoms or an aryl group having 6 to 12 carbon atoms. The amine acts as a paint binder and as a marine biocide. An antifouling coating composition may comprise a pigment with the said amine as binder. Alternatively an antifouling coating composition comprises as binder an acid-functional polymer whose acid groups are blocked by a monoamine group which forms an organic-solvent-soluble salt of the polymer.

Abstract: The rim of a pail body is provided with a compound curl for reception of a lid. The compound curl comprises as upper region extending away from the wall of the pail body or its outside, a lower region extending from the outer periphery of the said upper region towards the wall of the pail body and a rim edge part which extends from the inner periphery of the said lower region away from the wall of the pail body and is intermediate the said upper and lower regions whereby a lid applied over the rim with the central part thereof located within said rim can be clamped onto the said compound curl to form a seam therewith.The said lower region and the said rim edge part constitute a smaller pre-curl within the compound curl, the rim edge being spaced below the said upper region so that in clamping on the lid, a region of the said rim edge part is brought into supporting engagement with the said upper region.