In the field of naval warfare, Iranian speedboats built and armed based on high-speed commercial boats can be considered the naval equivalent of the technical concept. These boats, have limited naval capacity than heavy vessels, are extremely vulnerable to bad weather conditions, and can only be used in the coastal waters of the country of origin.
After World War II, there has been a record of heavier vessels using merchant ships for combat missions, but this cannot be considered a technical equivalent, as vessels such as the Japanese Kaiyō, the SS Atlantic Conveyor, and the SS Atlantic Causeway were not used as a non-classical combat device but as the most accessible answer to their classic combat needs due to limitations.
Martyr Roudaki: An answer to multiple needs
Although the IRGC Navy has defined its combat capability for non-classical combat based on high-speed missile boats, the operational needs and specific combat conditions of the sea have shown weaknesses that cannot be covered by this method. This force does not have suitable vessels and landing craft for amphibious warfare in the Persian Gulf, especially for the transfer of forces and heavy equipment to the Persian Gulf islands. This serious weakness was seen in the recent amphibious exercise of this force. The boats of this force lose their operational capacity in unfavorable sea conditions. The sailing range of these boats is limited compared to larger ships. The weapon's capability of these vessels is mainly limited to short-range cruise missiles or 107 mm rockets and heavy machine guns, which in the best case in the short-range provides the possibility of surface combat for these vessels. These vessels are particularly defenseless against airborne threats and are limited in range against surface targets.
But the construction of a heavy vessel like a frigate requires significant financial and industrial resources, and the construction of such a vessel, given the industrial potential in Iran, can take more than a decade.
Shahid Roudaki's 125-meter 4,000-ton vessel can significantly meet the need for a landing craft with the ability to carry a significant payload, but that is not all. The IRGC has tried to give a partial, not a maximum, and ofcourse an immediate response to a range of the aforementioned needs. This answer, with the expansion of the technical concept, has led to the construction of what could be called the world's largest technical. A commercial vessel that quickly becomes a military vessel with the addition of weapons that has considerable firepower and is far cheaper than its classic combat counterparts.
In recent years, the Americans have also installed mobile combat modules on their warships, both in the offensive and defensive dimensions, to fill occasional gaps on their vessels to complete the combat capability of their classic combat vessels. Installation of the LMADIS UAV disruptor system and placement of the LAV-25 armored personnel carrier on the deck of the USS Boxer on a mission in the Persian Gulf and the recent installation of the HIMARS rocket launcher on the deck of the USS Somerset are examples of this action.
But these were also used, as mentioned, as modules that were occasionally added to classic military ships.