Chabahar Port
Chabahar Port () is a seaport in Chabahar located in southeastern Iran, on the Gulf of Oman. It serves as Iran's only oceanic port, and consists of two separate ports named "Shahid Kalantari" and "Shahid Beheshti", each of which has five berths.
Jask
Jask is a port town, about south of Tehran,
situated on the Gulf of Oman. 
It serves as the capital of Jask County, and is the site of a base of the Iranian Navy which opened on October 28, 2008.
The base's position provides the Iranian Navy with the capability to close the Strait of Hormuz in order to block the entry of an "enemy" into the Persian Gulf. Admiral Habibollah Sayyari remarked on the base's opening that Iran was "creating a new defense front in the region, thinking of a non-regional enemy."