Iran on Saturday, 1 December, launched a domestically built destroyer in the Persian Gulf capable of traveling some five months without refuelling, state TV reported.
The 1,300-ton vessel, named Sahand after a mountain in northern Iran, took six years to build, according to the report.
TV showed a ceremony marking the inauguration with a three-gun salute at the southern port of Bandar Abbas, at the mouth of the strategic Strait of Hormuz, the passageway for nearly a third of all oil traded by sea.
Since 1992, Iran has been working to build a self-sufficient military, reportedly producing its own jet fighters, tanks, missiles and light submarines as well as torpedoes.
Iran added the first domestically made destroyer to its fleet in 2010 in the Persian Gulf.
Reportedly Iran has five other destroyers.
On Thursday, 29 November, Iran's navy announced the acquisition of two mini-submarines designed for operation in shallow waters such as the Persian Gulf, including one new sub and an overhauled one.
The announcements are likely intended to boost Iran's military image amid rising tensions with the United States, which in November re-imposed all sanctions that had been lifted under the 2015 nuclear deal between Iran and world powers. The Trump administration pulled America out of the deal in May.
(This article has been published in an arrangement with The Associated Press)