NELIAC was used by the Royal Canadian Navy to develop software for the Command and Control System 280 (used on the DDH-280 destroyers) in the years 1967 to 1971.
The Canadian Navy established a Program Generation Centre in Ottawa, Ontario, Canada for this software development.
Perhaps the most successful NELIAC application was control of the U.S. Navy automated High Frequency Direction Finding network (Classic Bullseye) which went into production in 1968 and lasted until the early 1990s.
In addition, NEL developed NELOS, a batch operating system which provided input-output for magnetic tapes, printers, and telecom equipment, provided sequenced compiling of jobs, and a symbol library permitting linking of very large computer applications and executing them on-line.
However, NELIAC programs were not easily portable because the language permitted manipulation of binary characters which were dependent on word lengths.
Many other well-known computer experts like Niklaus Wirth made contributions to the project, but ultimately NELIAC fell out of favor after the Navy Department standardized on compilers with commercial support.