having means to selectively release contents, e.g. swivel couplings ( arrangements between ships and off-shore structures for loading or unloading, using pipe lines B63B27/34; pipe joints or couplings, in general F16L)

Full Title

Buoys ( means for indicating the location of underwater objects B63C7/26; life-buoys, e.g. rings B63C9/08; ) > container type, i.e. having provision for the storage of material > having means to selectively release contents, e.g. swivel couplings ( arrangements between ships and off-shore structures for loading or unloading, using pipe lines B63B27/34; pipe joints or couplings, in general F16L)