When preparing a ship spares order, the reference numbers or letters should not be ignored, particularly If the requested type of relay is not available from the supplier and another vendor is being asked for an alternative.
To avoid mistakes it is suggested that the relay order form should include the following information:
• Relay manufacturer
• type of relay
• coil voltage
• number of contact blocks
• contact reference numbers or contact reference letters.
The relay order should be similar to this table.
* Ship Automation for marine engineers and ETOs
