Well landing troops on land and support their landing by means of a cannon fire is great for nations that wish to be doing lot of landing of troop type missions. Pakistan's objective generally is keeping others from reaching our shores
Regarding Pakistan's marines:
The Pakistan Marines (Urdu: پاکستان سمندریوں); English IPA: pɑkʰ məriːniz (or/ simply Marines Urdu: سمندریوں); reporting name PM), is an expeditionary and naval warfare uniform service branch of the Pakistan Navy that consists of active duty, high-ranking officers and other personnel of the Navy. The Pakistan Marines are responsible for providing force projection from the sea, using the mobility of the Pakistan Navy to rapidly deliver combined-arms task forces. [Re-]Established in 1990, it is estimated to comprise about 2,000 active-duty personnel from the Navy, with plans to grow to brigade strength by 2015.
In the Pakistani military leadership structure, the Marines are a component of the Pakistan Navy, often working closely with the Navy for training, executing expeditionary operations and logistics purposes. They are not a separate branch of the armed forces. The Marines were first formed as an amphibious battalion on 1 June 1971, in East-Pakistan as naval infantry to execute operations; however after poor performance in the 1971 war with India, they were disbanded in 1974. In 1990, the Marines were re-established by Commander Obaidullah; since then they have been a part of Navy, often conducting operations with other Pakistani naval forces
https://en.wikipedia.org/wiki/Pakistan_Marines
1971 = battalion
A battalion is a military unit. The use of the term "battalion" varies by nationality and branch of service. Typically a battalion consists of 300 to 800 soldiers and is divided into a number of companies.
2015 = brigade
A brigade is a major tactical military formation that is typically composed of three to six battalions plus supporting elements. Strength varies from 2,000 to 4,000. It is roughly equivalent to an enlarged or reinforced regiment. Two or more brigades may constitute a division.
Known dedicated amphibious assets PN:
2x KS&EW built Landing Craft (Mechanized) (LCM)
(More could be available: KS&EW had constructed similar six landing crafts for Pakistan Navy in 1976. As compared to the previous ones, the new LCMs are distinct because of their design and additional equipment.)
12x Griffon 2000TD hovercraft (also used by Special Service Group Navy aka SSGN, which are the Pakistan Navy's elite principal special operations force component. Together with the special forces of the air force, army [including army rangers], and naval marines, they form the Pakistan Special Operations Command P-SOC).
1x PNS Moawin (ex-Dutch navy Poolster class AOR)
In Dutch service, this was fitted so it could accommodate 150 marines with equipment and service as - provisional - transport for 1 marine company. In Dutch service would normally have 2 Sea Lynx helicopters but could handle/host up to 5 to support marine air assault.
Conclusion: While other ships could be used to stage assaults e.g. frigates, for any sea-borne assault of significant proportion, PN would have to take up ships from trade.
Pakistan Navy , quite a few of our platforms , need the SAM systems
1- OHP
4-5 Fast Attack boats
0 Corvettes ("Zero")
Even having a round of 4-6 Missiles per ship creates a proper air security umberella , note the anti ship missiles are nomally located in the rear of the fast attack ships so its not like it can't be integrated
For the SAM missiles from Turkey or China I would assume we could install the slanted missile launcher, and then may be run the wiring and create it's own dedicated center of operation
I feel if we wanted we could technically arm the fast attack boats with leathal launchers
a) Nasr (Surace level engagement)
b) Hisar-O , Hisar-A series (Low / Medium Air defence)
I fully agree that SAM systems are needed. This is why 4 new F22P with HQ7, C802 and a two gun (30mm gatling) CIWS are better than 6 old Type 21s, of which only 3 were refitted with SAM and 3 with Phalanx and Harpoon.
Instant additions are hand-held or pedestal mounted manpads. But these will not be integrated into ships combat system (at best with visual or audio cueing of operator on the basis of radar info).
There will be Type 21s decommisioning from which any DS-30 (B) AA Guns, Harpoon missiles and launch racks, Phalanx CIWS and LY-60 launcher and guidance radar could be dismounted and reused. I suspect that is how PNS Alamgir has gotten its Phalanx and Harpoon systems.
LY-90 is a semi-active radar homing missile, a Chinese Sea Sparrow/Aspide equivalent. This could be mounted on a platform over the closed-off base of the MK-13 launcher on PNS Alamgir, much like Americans have installed a platform with a 25mm cannon there. This would not hinder the 2x4 Harpoon already installed there, particularly not if the platform were extended a little farther forward. Alternatively, relocate the 76mm to the location that the Australian and Turkish navy have used for mounting a Mk41 VLU, and put the LY-60 onto the ship's "back".
As the Taiwanese Cheng Kung variant shows, one could mount a small caliber cannon (such as the DS-30B) on extended platforms at the ships flanks. MANPADS could be integrated with such mounts. Even 1 such gun with manpads in front of the bridge is an improvement over the present.
On PNS Alamgir, target illumination for this SARH missile could possibly be done by the WM-25 'egg' over the bridge and/or installation of the Chinese radar illuminator associated with LY-60 onto the superstructure behind the main mast, where the STIR for the SM1 used to be (there is now a tripod mounted little satcom dome, but this could be relocated).
See
https://defence.pk/pdf/threads/paki...-information-pool.203829/page-21#post-7901660
DS-30(B) guns on Type 21
LY-60 on Type 21