NHS Nautical Chart NHS117: Ytre Hardangerfjorden GMDSS This up to date resource offers critical This up to date resource offers critical information aimed at assisting maritime operators in understanding and complying with regulations concerning the discharge of garbage from ships The purpose of this publication is to provide easy reference to the International Maritime Organization (IMO) resolutions on shipboard pollution prevention equipment that are required under MARPOL NHS charts are printed on demand and contain the latest chart information available at the time of printing The Norwegian Hydrographic Service (a division of Kartverket responsible for marine navigation in Norway) signed an agreement with OceanGrafix enabling authorization to print and distribute nautical charts for Norway