Name: IEC 61023:2007 — Maritime navigation and radiocommunication equipment and systems - Marine speed and distance measuring equipment (SDME) - Performance requirements, methods of testing and required test results
SKU: IEC 61023:2007
Price: 35 EUR
Availability: InStock

Overview

IEC 61023:2007 - Third edition - specifies minimum performance requirements, methods of testing and required test results for marine Speed and Distance Measuring Equipment (SDME). Written for compliance with SOLAS Chapter V Regulation 19 and based on IMO Resolution MSC.96(72), this IEC standard is associated with IEC 60945 and updates SDME requirements (notably reduced minimum water-depth operation for ground-based systems and the addition of a serial interface).

Keywords: IEC 61023:2007, SDME, marine speed and distance measuring equipment, SOLAS, IMO MSC.96(72), IEC 60945.

Key topics and technical requirements

Scope and system composition
- SDME comprises a sensor plus a processing/display unit; combinations of separate units are tested as an entity.
- Intended to provide forward speed and distance run for navigation and manoeuvring.
Performance & environmental limits
- Devices measuring speed through the water: meet requirements in water depth > 3 m beneath keel.
- Devices measuring speed over the ground: meet requirements in water depth > 2 m beneath keel (amendment in this edition).
- Effects such as sea state, temperature, salinity, sound velocity, shallow-water effects, heel/trim/roll/pitch must be documented in the equipment handbook.
Display and presentation
- Speed: analogue or digital. Digital increments ≤ 0.1 knot. Analogue graduations at least every 0.5 knot and numeric marks at least every 5 knots.
- Distance run: digital only, range to at least 9 999.9 nautical miles, increments ≤ 0.1 nmi, with means to reset where practicable.
- Readable day/night; direction and mode must be unambiguous when non-fore-and-aft speeds are shown.
Accuracy
- Speed (digital): ≤ 2% of ship speed or 0.2 kn, whichever is greater.
- Speed (analogue): ≤ 2.5% or 0.25 kn.
- Distance run: ≤ 2% of distance run per hour or 0.2 nmi/h, whichever is greater.
- Output data transmission accuracy: same as digital speed requirement.
Interfaces & outputs
- Support for at least VBW and VLW sentences per IEC 61162-1 (serial digital interface).
- Contact-closure output option: one closure per 0.005 nmi; minimum closure/pulse width 50 ms.
Testing
- Clause 5 details test arrangements, minimum depth, configuration, and required test results aligned to the IMO performance standards.

Applications and users

Shipbuilders and integrators specifying SDME for newbuilds and retrofits
Marine electronics manufacturers and test labs certifying product compliance
Flag states, classification societies, and maritime surveyors enforcing SOLAS/IMO requirements
Ship operators, navigators and bridge system designers who rely on accurate speed-over-water and speed-over-ground data for navigation, voyage planning, ECDIS/radar integration and manoeuvring

Related standards

IEC 60945 - General requirements and test methods for maritime navigation and radiocommunication equipment
IEC 61162-1 - Digital interfaces (talker/listener) - required sentences VBW, VLW
IMO A.694(17) and MSC.96(72) - IMO performance standards referenced by IEC 61023

IEC 61023:2007 is essential when specifying, testing or certifying SDME for compliance with SOLAS requirements and for integration into modern bridge systems.

IEC 61023:2007

Похожие стандарты

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

IEC 60945:2002

Maritime navigation and radiocommunication equipment and systems - General requirements - Methods of testing…

IEC PAS 61162-102:2003

Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 102: Single talk…

IEC 62590-2-2:2026

Railway applications - Electronic power converters for fixed installations - Part 2-2: DC Traction applicatio…

IEC 61753-042-02:2026

Fibre optic interconnecting devices and passive components - Performance standard - Part 042-02: Plug-pigtail…

IEC 61837-2:2018

Surface mounted piezoelectric devices for frequency control and selection - Standard outlines and terminal le…

IEC 61851-23-1:2026

Electric vehicle conductive charging system - Part 23-1: DC electric vehicle supply equipment - Automated con…

IEC 63506:2026

Calibration of the prompt fission neutron logging tools

IEC 63589-1:2026

Linear accelerator - Electron linear accelerator for radiation processing - Part 1: General requirements and…