Types of joints for disposal and refuelling of drinking water, fire fighting water, sewage, oil and oily mixtures – Synopsis
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/1997

Ships and marine technology – Types of connections for the disposal and transport of drinking water, fire fighting water, sewage, oil and oily mixtures – Overview
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 05/01/2017