Registers of Certificates of Competency of engineers dating from 1902 - 1944. The register is in order of certificate number (not names) starting at 39000 and ending at 83424. The records consist of:
Name
Certificate number
Certificate Grade
Place of Birth
Year of Birth
Remarks
Certificate numbers can be found in the Registers to Certificates of Competency and Service (Engineers) held at The National Archives (Index BT 141 also see BT 139.) .

Administrative / biographical background
By an order of 1845 the Board of Trade authorized a system of voluntary examination of competency for men intending to become Masters and mates of foreign-going British merchant ships. The system was made compulsory for those seeking promotion by the Act of 1850 and extended to the examination of Masters and mates of home trade vessels by the consolidating Act of 1854. Examinations were conducted in the major ports of the United Kingdom and successful candidates were granted Certificates of Competency. Masters and mates already serving were granted Certificates of Service. In 1862 Certificates of Competency were issued to Engineers and those already serving were granted Certificates of Service. In 1881 Certificates of Competency were issued to officers with experience in steamships (See RSS/EC for Engineers Certificates of Competency and Service).