The Pakistan Navy currently operates roughly 20 Westland WS-61 Sea King helicopters alongside six Harbin Z-9EC ASW helicopters and about seven Aérospatiale Alouette III light utility helicopters.
Sea King fleet: three acquisition batches and a multi‑mission backbone
The Sea King has anchored Pakistan Naval Aviation since 1974, but the fleet is a patchwork assembled across three separate acquisition batches. The first batch (1974–75) comprised six Sea King Mk.45 airframes from the United Kingdom (based on the Royal Navy’s HAS.1); one was lost in 1986 and replaced by an ex‑Royal Navy HAS.5 redesignated Mk.45C. In 2017 the PN received seven ex‑Royal Navy and ex‑Royal Air Force Sea Kings (including two HC.4 Commandos and one HAR.3A SAR) refurbished by Vector Aerospace at Gosport; one of those HC.4s was lost in August 2018. The largest tranche arrived in 2021 when ten ex‑Qatari Sea Kings — five Commando Mk.3A (ASW/ASuW‑capable) and five Commando Mk.2 (troop/utility) — were inducted, bringing the fleet to approximately 20 airframes.
Platform characteristics matter for any successor: the Sea King is a roughly 9.5‑tonne MTOW twin‑engine helicopter (two Rolls‑Royce Gnome turboshafts, ~1,660 shp each), with a crew of two to four, endurance near four hours, range ≈1,230 km, and troop capacity in the 22–28 range depending on variant. Some PN airframes were upgraded with Leonardo SeaSpray 5300E AESA radars, supporting a wide mission set — ASuW, ASW, CSAR, troop lift, HVBSS, MEDEVAC and VIP transport — that sets the benchmark for any replacement.
Shipborne and light rotor assets: Z‑9EC static, Alouette III nearing retirement
The PN inducted six Harbin Z‑9EC ASW helicopters beginning in 2009 to support the F‑22P (Zulfiquar) frigates. Despite commissioning eight new surface combatants since 2021 — four Tughril‑class (Type 054A/P) frigates and four Babur‑class corvettes — the Z‑9EC fleet has remained fixed at six. The Z‑9EC is a ~4.1‑tonne MTOW shipborne ASW platform and is too small to substitute for the Sea King’s broader mission set.
The roughly seven Alouette III helicopters in No. 333 Squadron are described as past their useful life. Other Pakistani services have already moved on: the Pakistan Army ordered Airbus H125 (AS350 B3) types beginning in 2014, and the Pakistan Air Force selected the Leonardo AW139 for Alouette replacement — options the Navy could follow for its light‑utility requirement.
Why replacement has been deferred: budget sequencing and supplier constraints
Even with a reported 20% defence budget increase for FY2025–26, the PN has faced competing priorities and a dense procurement pipeline. The Hangor‑class submarine program (eight boats, estimated $4–5 billion) is consuming funds and industrial effort — the first Hangor was commissioned in Sanya, China, on 30 April 2026, with four boats built in China and four at Karachi Shipyard and Engineering Works (KSEW). The PN also signed a contract with KSEW for the lead Jinnah‑class frigate (November 2025), is developing the SWATS program, plans a 10‑aircraft Sea Sultan LRMPA (yet to be contracted), and continues Babur and Yarmouk deliveries. These programs collectively pushed a new helicopter buy down the priority list.
On the supplier side, the PN’s preferred single medium‑weight platform (9–12 tonnes) is constrained by export rules and cost: the S‑70i Black Hawk route is ITAR‑dependent; the AW101 is priced at roughly $107 million per unit (making a 12–16 unit buy a projected $1.3–$1.7 billion before weapons and infrastructure); and the AW159 (~$54 million each) uses an LHTEC engine subject to U.S. third‑party transfer restrictions — a repeat of issues that blocked the T129 ATAK sale.
Candidate field and the Turkish T925 opportunity
Options narrow to a few paths. The S‑70i is the operationally obvious match but faces ITAR and political barriers. The NH90 has a maritime NFH variant but has documented serviceability problems in European fleets and no known PN talks. The Chinese Z‑20 would fit the weight class and be financially accessible, but its export availability and maritime configuration readiness are unclear.
Prime among emerging candidates is the Turkish TUSAS T925: a 12‑tonne MTOW heavy utility helicopter in pre‑flight testing whose revised fuselage mockup was shown at the Paris Air Show (2025) and IDEF 2025. Published specifications include up to 19 passengers, range ≈519 km, endurance >2.75 hours, service ceiling 20,000 ft, and planned naval features (folding tail and rotor). Interim engines are Ukrainian TV3‑117 derivatives with a domestically produced ~2,500 shp Turkish engine planned for production. The T925’s maiden flight target is 2026 and entry into service earliest from 2028 — timelines that could align with the PN’s planning horizon if both sides engage early. NRDI signed an MoU with TUSAS in February 2025, and a joint helicopter discussion involving 32 institutions was reported at the 8th Pak‑Turk Joint Working Group in January 2025, indicating institutional interest in collaboration.
What this means for the Pakistan Navy, NRDI, and TUSAS
- Pakistan Navy: The Sea King fleet remains serviceable and can likely be sustained into the early‑to‑mid 2030s, but the PN prefers a single medium‑weight multi‑role successor and is unlikely to open a fleet buy until procurement momentum stabilizes — vendors should expect a two‑to‑five‑year lead time.
- NRDI and NESCOM: Both bodies could play central roles in any collaborative program; NESCOM’s miniaturized ESM (RIBAT), lightweight torpedo developments and the Rasoob 250 cruise missile are noted as potential rotary‑wing subsystem and weapons contributors.
- TUSAS (Turkiye): The NRDI MoU and joint working‑group discussions present a pathway if the T925 meets navalization and certification timelines; early collaborative engagement would reduce program risk for the PN but require patience around development‑stage timelines.
The Pakistan Navy is not at an aviation crisis point today, but the global Sea King support base is shrinking — Germany retired its Sea Kings in March 2024, the U.K. in 2018 and Canada in 2018 — so successor planning must proceed well before hard airframe limits arrive. The PN’s preference for a single medium‑weight, multi‑role helicopter and the convergence of NRDI‑TUSAS engagement make the T925 the platform to watch; vendors that bring financing, regulatory pre‑clearance and willingness to co‑develop subsystems stand to gain earliest traction.
Source: Quwa — Demand Tracker: Pakistan Navy’s Next Helicopter Fleet
