Testing for equipment to be installed on board ships:
There are several EMC standards which cover marine equipment. These include EN 60533, Lloyds Register spec N°1 and the most commonly used standard IEC 945.
IEC 945 is a complete test standard for the marine environment taking into account the mechanical, electrical and environmental conditions as well as the EMC phenomena.
Sections 9 and 10 of IEC 945 includes the EMC requirements, that covers a wide frequency range due to the nature of the equipment found on board ships which is explained in annex C of the standard.
Section 9 covers the EMC emissions, which take into account the protection of the ships navigation and radio systems as well as the consideration that ships normally operate at sea and will not cause interference to land based radio communications.
Section 10 is the EMC immunity section, which is also tailor made to suit the marine environment. However, the standard adopts the IEC 1000-4-x test methods, setups and equipment for most of the tests but have extended frequency ranges to take into account the expected frequency ranges on board a ship.
Although IEC 945 and EN 60533 are comprehensive test specifications, in some cases the Lloyds Register Spec. N°1 is applicable for the ships underwriters, and may also be required. This is normally part of the contractual agreement when supplying equipment integral to a particular ship.
If you wish to test to any of these standards, it is always best to call for more specific requirements. The standards also take into account the location, purpose and how the instrument is to be installed on the ship.
October 2007 - 3C Test have added EN 60945:2002, SECTION 9 & 10 to our schedule enabling us to test Marine Navigation, Radionavigation, Marine instruments and safety.