The Yemeni Navy and Coastal Defence Forces is the maritime component of the armed forces of Yemen.Yemen's navy was created in 1990 when North and South Yemen united. Yemen early on had problems with trying to keep drugs from entering Yemen by sea. In 2006, Yemen purchased 10 Bay-class patrol boats which were very effective at stopping smugglers from entering Yemen.The Bay patrol craft currently under construction are, however, for the Yemeni Coast Guard, not the Yemeni Navy. Likewise, the 10 Austal Patrol Craft belong to the Coast Guard, not the Navy.