The Navy said this was the 21st encounter with Somali pirates in the 22 weeks since Now Ruz. The Navy hasn’t said why it thinks Iranian vessels are drawing such frequent attacks, if they really are. In the latest encounter, the Navy said pirate boats attacked the unnamed Iranian ship three times—first, in the Bab el-Mandeb strait leaving the Red Sea, then in the Gulf of Aden and finally in the Arabian Sea.