ISO 19018-2020 pdf free download – Ships and marine technology — Terms, abbreviations, graphical symbols and concepts on navigation.
This document provides terms, abbreviations and graphical symbols for use in maritime navigation on board ships. Symbols for use in mathematical formulae are also given, as applicable.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
Terms, abbreviation and symbols used in navigation are given in Clauses 4 to 16. Abbreviations can prove useful, but they should not be used in mathematical formulae.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1 navigation
process of finding the position of a craft or vehicle, and of planning, recording and controlling its movement from one place to another
5.2 Dead ahead direction
Dead ahead direction is the direction ahead of the ship’s fore-and-aft line.
6 Course, heading, track, speed
6.1 Course, heading
Course (CRS) and heading (HDG) are angles, measured in the horizontal plane from one of the reference directions specified in Clause 5, counted clockwise from 000° through <360°, written as three-digit numbers.ISO 19018 pdf download.