Wiktionary
watchkeeping
n. The duties of a watchkeeper, i.e. keeping a lookout.
Usage examples of "watchkeeping".
When officers, chilled from an open bridge and dog-weary from watchkeeping, would slump down and probably fall asleep until they were needed.
All the watchkeeping officers had to do was hold on to the next ahead.
In addition to being great fighters and having good senses of smell, my troops are great navigators and fire control officers, watchkeeping officers and cooks.
When he was finished and told the AI to resume watchkeeping, the Ship reminded him that he had not annotated the log.