The Seraj-1 is Iran's militarized Bladerunner-derived fast boat, adapted for IRGC Navy high-speed littoral operations after Iran obtained and reverse-engineered a Bladerunner 51-style hull. Public sources describe rocket, heavy-machine-gun, missile, and air-defense derivatives, and 2026 Strait of Hormuz reporting places the Seraj series inside Iran's small-boat fleet during the 2026 Iran War.
During the 2026 Iran War, reporting on the Strait of Hormuz crisis placed the Seraj series within the IRGC Navy small-boat fleet operating alongside Zolfaghar and Boghammar-derived craft, while U.S. reporting described Iranian missiles, drones, and small boats attacking U.S. destroyers during the May 7 transit.
Seraj-1 began as a Bladerunner-derived armed fast boat, then appeared in open-source reporting as a basis for missile-armed and air-defense derivatives.
| Variant | Configuration | Designation notes |
|---|---|---|
| Seraj-1 fast boat | Rocket-armed baseline | Open-source naval analysis and Iranian reporting describe the Seraj-1 with a DShK 12.7 mm heavy machine gun and 107 mm rocket launcher. Sources: Bladerunner, Iran Inaugurates Mass Production of Assault Boats |
| Missile-armed Bladerunner-derived craft | Small missile boat derivative | Covert Shores identified a later IRGC Navy display as a missile-armed Bladerunner-derived craft, while cautioning that only one example was shown. Sources: Iran's IRGC-Navy Gets 340 New Boats |
 | Short-range air-defense derivative | Covert Shores assessed the IRGC Navy air-defense fast boat as apparently derived from the Bladerunner hull form and fitted with short-range surface-to-air missiles. |
Open-source descriptions of the baseline Seraj-1 identify a bow-mounted DShK-family heavy machine gun in addition to its rocket launcher.
| Carried item | Item type | Carriage evidence |
|---|---|---|
 | 12.7 mm heavy machine gun | Covert Shores describes the Iranian Bladerunner/Seraj fit with a DShK 12.7 mm machine gun mounted on the bow, and ONI describes Siraj-1 as modified to carry crew-served weapons and rockets. Sources: Bladerunner, Iran's Naval Forces |
The Seraj-1 page is best read as a high-speed hull lineage rather than one fixed loadout. Public sources connect the Iranian version to a commercial Bladerunner 51-style hull, then show several military fits built around the same speed-focused small-boat concept.
| Topic | Source-backed context |
|---|---|
| Hull lineage | Powerboat and naval-analysis sources trace the Iranian Seraj-1 to a Bladerunner 51-style hull acquired around 2009 and adapted at Bandar Abbas. |
| Baseline armament | ONI and Covert Shores describe the Seraj/Siraj-1 as a Bladerunner copy configured with crew-served weapons and rockets; Covert Shores specifies a DShK 12.7 mm gun and 107 mm rocket launcher in Iranian service. |
| Production context | Iranian reporting placed Seraj 1 production at the Defense Ministry marine industries complex and described it as a fiberglass rocket-capable boat with electronic navigation equipment. |
| Derivative roles | Later open-source reporting identifies missile-armed and short-range air-defense craft in the same Bladerunner-derived branch, including the |
| Fleet context | The Seraj line appears within the broader   |
| 2026 war context | During the 2026 Strait of Hormuz crisis, reporting placed the Seraj series within the IRGC Navy small-boat fleet used for maritime pressure and sea-denial around the waterway. |
The Bradstone Challenger, a Bladerunner 51, completed a high-speed circumnavigation of Britain; later Seraj-1 reporting traces Iran's copied hull lineage back to that racing design.
Sources: Iran's Fast Boats: Powerboat Racing Origins, Siraj-1 / Bladerunner
Powerboat News reports that Iran obtained a Bladerunner 51 through a South African dealer and moved it to Bandar Abbas for reverse-engineering.
Sources: Iran's Fast Boats: Powerboat Racing Origins
Iranian reporting said the Defense Ministry's marine industries complex had inaugurated production lines for Seraj 1 and Zolfaqar high-speed assault boats.
Sources: Iran Inaugurates Mass Production of Assault Boats
The Office of Naval Intelligence described Siraj-1 as an IRGC Navy copy of the British-built Bladerunner configured with crew-served weapons and rockets.
Sources: Iran's Naval Forces
Covert Shores reported an IRGC Navy ceremony that included a missile-armed craft apparently based on the British-designed Bladerunner lineage.
Sources: Iran's IRGC-Navy Gets 340 New Boats
During the 2026 Iran War, reporting on the Strait of Hormuz crisis placed the Seraj series within the IRGC Navy small-boat fleet active around the contested waterway.
Sources: Iran's Fast Boats: Powerboat Racing Origins, Financial Times Mosquito Fleet
