Interesting, since initially PNS-Alamgir was equipped with 2X4-Hapoon Launchers.
View attachment 431401
View attachment 431402
Even Badr had 2 x 4 Launchers in some pictures:
View attachment 431403
May be the launchers are configurable depending on mission or 4 cell launcher is intended to be used elsewhere(unlikely)
As far a missiles go, yes (I would think), there's no pressing reasen to mount 2x2 and the racks can hold 2/4x2/
Over the last decade, PN has made changes to weapons configuration on Type 21's.
PNS Badr (previously with 2x2 Harpoon)
was seen with 2x4 Harpoon before being retired from PN service.
PNS Babur (previously with 2x2 Harpoon)
was seen with LY-60 before being retired from PN service.
PNS SAIF 253, PNS SHAMSHEER 252 & PNS BABUR 182
PNS Tippu Sultan (previously with LY-60)
was fitted with 2x4 Harpoon
PNS Tariq appears to have retained the original configuration i.e. LY-60
PNS Shahjahan (previously with 2x2 Harpoon)
was fitted with 2x4 Harpoon
PNS Khaibar appears to have retained the original configuration i.e. LY-60
Also, PNS Alamgir (previously with 2x2 Harpoon)
has been fitted with 2x4 Harpoon
That means 3 sets of 2x2 Harpoon are available and can be fitted to MRTP 33's, which for some reasons don't have Harpoon capability.
FMS Pakistan - HARPOON Block II Anti-ship Missiles
(Source: US Defense Security Cooperation Agency; issued May 31, 2006)
WASHINGTON --- The Defense Security Cooperation Agency notified Congress of a possible Foreign Military Sale to Pakistan of Harpoon Block II Anti-ship Missiles as well as associated equipment and services. The total value, if all options are exercised, could be as high as $370 million.
The Government of Pakistan has requested a possible sale of 50 UGM-84L (submarine-launched), 50 RGM-84L (surface-launched), and 30 AGM-84L (air-launched) Block II Harpoon missiles; 5 Encapsulated Harpoon Command Launch Systems; 115 containers; missile modifications; training devices; spare and repair parts; technical support; support equipment; personnel training and training equipment; technical data and publications; U.S. Government and contractor engineering and logistics support services; and other related elements of logistics support. The estimated cost is $370 million.
http://www.defense-aerospace.com/ar...-$370m-deal-for-harpoon-missiles-(jun-2).html
Explains the appearance of 2x4 Harpoon's on Type 21's and PNS Alamgir.