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PNS Khalid (S137)


Diesel-Electric Attack Submarine (1999)


Naval Warfare

PNS Khalid S137 is one of three Khalid-class diesel-electric attack submarines in service with the modern Pakistani Navy.



Authored By: Staff Writer | Last Edited: 09/19/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.
In the late-1970s, DCNS of France developed a new cost-effective, export-friendly diesel-electric attack submarine to succeed the 1960s-era Daphne design. This became the Agosta-class and the new boats were eventually taken into service by the French Navy as well as the navies of Spain, Malaysia and Pakistan. For the Pakistan Navy, two distinct batches were made, one based in the original Agosta-70 standard (these two boats were originally bound for South Africa, pre-embargo) and the other in the improved Agosta-90B standard (three boats in all).

Of the three Agosta-90B-class boats taken into service, only the first was constructed in French waters - the remaining two were built in Pakistan and future upgrades were handled with the assistance of specialists in Turkey. These became PNS Khalid (S137), PNS Saad (S138), and PNS Hamza (S139)

PNS Khalid was commissioned from the Agosta-70B-class stock on September 6th, 1999. She was constructed in French waters by DCNS and named after Khalid ibn al-Walid, a companion of Muhammad. At its core, the boat was developed along conventional lines, the propulsion scheme being centered on a diesel-electric combination arrangement allowing for basic surfaced and high-speed submerged travel at 12 knots and 20.5 knots, respectively, out to ranges of 8,500 miles.

The boats were given a basic profile with the sail being fitted ahead of midships, dive planes seated forward at the bow, and a cruciform plane pattern set at the stern near the single shaft. The sail was finished with smooth, rounded edges and wide when viewed in the side-profile, sloping along its aft-end. The nose cone was left somewhat blunt when cutting through the water at speed and a sonar fit was noticeable as a protrusion at the bow. The boat was made capable of taking a crew of about forty-one men with dimensions including a running length of 291.9 feet with a beam of 19.7 feet. Displacement is 1,525 tons when surfaced and 2,085 tons when submerged.

The attack submarine was given the usual surface-search, radar and sonar fits consistent with vessels of this type (including internal sonar as well as a towed array unit) and armament became 4 x 21" bow-facing torpedo tubes also having support for the American Harpoon anti-ship missile and a naval mine dispensing quality.

As of this writing (2018), PNS Khalid (S137) remains in active service with the modern Pakistan navy fleet, leading her group of three boats.

Specifications



Service Year
1999

Origin
Pakistan national flag graphic
Pakistan

Status
COMMISSIONED
In Active Service.
Complement
41
PERSONNEL


Class
Khalid-class (Agosta 90B-class)
Number-in-Class
3
VESSELS
Ships-in-Class


PNS Khalid (S137); PNS Saad (S138); PNS Hamza (S139)


National flag of Pakistan Pakistan
(OPERATORS list includes past, present, and future operators when applicable)
Submerged Attack
Traveling under the surface to search, track, and / or engage or reconnoiter areas.
Maritime Patrol
Active patroling of vital waterways and maritime areas; can also serve as local deterrence against airborne and seaborne threats.
Fleet Support
Serving in support (either firepower or material) of the main surface fleet in Blue Water environments.


Length
249.3 ft
75.99 m
Beam
19.7 ft
6.00 m
Displacement
1,525
tons
Disp.Submerged
2,085
tons


Installed Power: 1 x Diesel-electric propulsion arrangement driving power to 1 x Shaft at the stern.
Surface Speed
12.0 kts
(13.8 mph)
Submerged Speed
20.5 kts
(23.6 mph)
Range
7,386 nm
(8,500 mi | 13,679 km)


kts = knots | mph = miles-per-hour | nm = nautical miles | mi = miles | km = kilometers

1 kts = 1.15 mph | 1 nm = 1.15 mi | 1 nm = 1.85 km
4 x 533mm (21") torpedo tubes (bow-facing).

Support for SM.39 Exocet anti-ship missiles.


Supported Types


Graphical image of an aircraft aerial torpedo
Graphical image of an aircraft anti-ship missile


(Not all weapon types may be represented in the showcase above)
None.


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