BS ISO 13643-4:2017 pdf download.Ships and marine technology — Manoeuvring of ships — Part 4: Stopping, acceleration, traversing
1 Scope
This document defines symbols and terms and provides guidelines for the conduct of tests to give evidence about the stopping, acceleration, and traversing of surface ships, submarines, and models. It is intended to be read in conjunction with ISO 13643-1.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 13643-1, Ships and marine technology — Manoeuvring of ships — Part 1: General concepts, quantities and test conditions
ISO 13643-5:2017, Ships and marine technology — Manoeuvring of ships — Part 5: Submarine specials
ISO 80000-1, Quantities and units — Part 1: General
ISO 80000-3, Quantities and units — Part 3: Space and time
IMO MSC Circular 1053, Explanatory Notes to the Standard for Ship Manoeuvrability
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp/
3.1 acceleration test
manoeuvring test to determine the ship’s performance under positive acceleration or negative acceleration (deceleration)
3.2 coasting stop test
manoeuvring test to determine the ship’s behaviour after the propulsion plant has been disengaged and/or shut down
3.3 manoeuvring device
rudder, azimuthing thruster, hydroplane, cycloidal propeller, or equivalent system used to manoeuvre a vessel
5 General test conditions
When operating submerged, submarines shall be trimmed according to the results of the neutral level flight test (see ISO 13643-5:2017, Clause 8). During the test, the dived depth shall be kept as constant as possible. The dived depth and the plane angles are to be recorded continuously. If the submarine is equipped with planes acting in the horizontal as well as the vertical direction at the same time (e.g. X-planes), these planes should be controlled in a way that a steady dived depth is maintained as matter of priority. During the test, including the approach phase, each successive position of the ship is to be recorded, e.g. using an onboard navigation system during surface operations, at suitable time intervals (usually every second). The reference point on the ship relative to which its track is measured should be defined in advance (e.g. location of the positioning system antenna). This point is not necessarily identical with the origin of the ship-fixed axis system for which the ship’s track is given (see ISO 13643-1). Data which are to be recorded continuously include (but need not be limited to) manoeuvring device setting, propulsion setting, speed through the water, heading, rate of turn, heel angle, true wind velocity and direction, and relative wind velocity and direction.
BS ISO 13643-4:2017 pdf download
