In marine navigation, anything that hinders or prevents movement, particularly anything that endangers or prevents passage of a vessel. The term is usually used to refer to an isolated danger to navigation, such as a sunken rock or pinnacle.
Definition Source :
IHO Hydrographic Dictionary, English
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Amend definition. Add definition source, reference and similarity. Add INT1 and S-4 references. Add distinctions. Remove remark.
On behalf of the IHO Member States, the International Hydrographic Bureau would like to thank Korea Hydrographic and
Oceanographic Agency(KHOA) of the Republic of Korea for giving active support in the development of the S-100 GI Registry