Ordinary seaman (rank)
The term Ordinary seaman was used in the Royal Navy in the middle of the 18th century. The term was used to refer to a seaman with between one and two years' experience at sea. They showed enough seamanship to be so rated by their captain. A seaman with less than a year's experience was referred to as a landman. A sailor with more than two years' experience was referred to as an able seaman.