Parvin-class patrol craft
| {{Infobox ship begin}}
{{Infobox ship image |Ship image=الحاق ناوچه های گشت دریایی به نیروی دریایی ارتش (3).jpg |Ship image size=}} {{Infobox ship class overview |Builders=Peterson Builders, Sturgeon Bay |Operators=Islamic Republic of Iran Navy |Class before= |Class after= |Subclasses= |Built range= |In service range=1967–present |Total ships planned= |Total ships on order= |Total ships building= |Total ships completed=3 |Total ships cancelled= |Total ships active=3 |Total ships laid up= |Total ships lost= |Total ships retired= |Total ships scrapped= |Total ships preserved= }} {{Infobox ship characteristics |Ship type=Large patrol craft |Ship displacement=
|Ship length={{convert|30.5 |
| 30.8|m|ft|abbr=on}}
|Ship beam={{convert|6.5 |
| 6.7|m|ft|abbr=on}}
|Ship draught={{convert|2.5 |
| 3.1|m|ft|abbr=on}}
|Ship power=Diesel |Ship propulsion=*8 × GM 6-71 engines, {{convert|2,040|hp|MW}}
|Ship speed={{convert|15 |
| 22|kn|km/h|abbr=on}}
|Ship range=*{{convert|1,140|nmi|km|abbr=on}} at {{convert|17|kn|km/h}}
|Ship complement=20 |Ship notes= }} |
The Parvin ({{langx|fa|پروین}}) is a class of large patrol craft operated by the Islamic Republic of Iran Navy. They ships in the class are modified versions of PGM-71 vessels, all built by the American shipyard Peterson Builders.
Design
Sources differ in recording characteristics of Parvin class vessels.
According to Jane's Fighting Ships, the ships have a standard displacement of {{convert|100|t|LT|lk=out}} and {{convert|150|t|LT|abbr=on}} at full load.{{citation|editor1-last= Saunders|editor1-first=Stephen|editor2-last=Philpott|editor2-first=Tom|chapter=Iran|title=IHS Jane's Fighting Ships 2015–2016|publisher =IHS Jane's|location=Coulsdon|date=2015|edition=116th Revised|series=Jane's Fighting Ships|page=389|isbn=9780710631435|oclc=919022075}} Conway's All the World's Fighting Ships puts the numbers at {{convert|105|t|LT|lk=out}} and {{convert|146|t|LT|lk=out}}.{{citation|title=Conway's All the World's Fighting Ships 1947–1995|chapter=Iran|editor-first1=Robert|editor-last1=Gardiner|editor-first2=Stephen|editor-last2=Chumbley|editor-first3=Przemysaw|editor-last3=Budzbon|publisher=Conway Maritime Press|year=1996|isbn=978-1557501325|pages=187}}
The class design is {{convert|30.8|m|abbr=on}} long, would have a beam of {{convert|6.5|m|abbr=on}} and a draft of {{convert|2.5|m|abbr=on}} on the report of Jane's, while Conway's mentions the dimensions as {{convert|30.5|m|abbr=on}} × {{convert|6.7|m|abbr=on}} × {{convert|3.1|m|abbr=on}}.
Both sources agree that the ships are powered by eight General Motors diesel engines totaling {{convert|2,040|hp|MW}} that rotate a pair of shafts, but the engine models are variously cited GM 8-71 and GM 6-71. The system can reach a top speed of {{convert|15|kn|km/h}} as stated by Conway's, albeit Jane's mentions {{convert|22|kn|km/h}}. The ranges given for the class are {{convert|1,140|nmi|km|abbr=on}} at {{convert|17|kn|km/h}} and {{convert|1,500|nmi|km|abbr=on}} at {{convert|10|kn|km/h}}.
Original armament of the ships reportedly included five guns: 12.7mm and 20mm each two and one 40mm. French sources give one 40mm and four 20mm machine guns, as well as a pair of Mk22 Mousetrap and DC racks. As of 2015, they are reported to be armed with five guns consisting an old variant of Bofors 40 mm/60, a couple of Oerlikon GAI-BO1 20mm in addition to two 12.7 machine guns. They are also equipped with four racks of depth charge (with eight US Mk 6), and two missile launchers of unknown type are installed on them after refit.
The original radar was model 303 of Decca Radar, while the current surface search system is known to be working on I-band. The sonar is a high-frequency hull-mounted active attack SQS-17B but is allegedly unlikely to be serviceable per Jane's.
Ships in the class
References
{{reflist}}
{{Ship classes of the Iranian Navy}}
Category:Ships built by Peterson Builders