An update on the Boeing P-8 Poseidon:
The P-8 is roughly similar to Boeing's 737-800ERX model, but with numerous modifications to suit its maritime patrol and surveillance mission. Some of the modifications accommodate the needs for low-level missions and more aggressive maneuvering than civil counterparts. The P-8 is also structurally stronger and uses stronger wings from the 737-900. The wings have raked wingtips rather than winglets. Given the extensive electronic equipment of the P-8, the generators on each engine were upgraded from 90 kVA to 180 kVA.
The P-8 crew consists of at least two pilots, -- with a third added for longer-duration missions -- on the flight deck. Back in the cabin are five mission consoles, normally operated in the USN by two Naval Flight Officers and three enlisted aircrewmen. Again, for longer flights relief crew are often added. There are crew rest seats in the rear.
During the development phase, the Navy opted to not include a magnetic anomaly detector, which is effective only at low altitude. The initial export customer, India, decided to include MAD in their aircraft, which also have other Indian Navy-specific differences. Other export customers no doubt have specified unique equipment to meet their needs.
Thye P-8 has 5 hardpoints in the smallish bomb bay just aft of the wing and 6 external hardpoints. Typical weapons include ASW torpedoes and the related HAAWC, a guided glide vehicle which can be launched from altitude and carries a homing torpedo down to low level. External weapons can include Harpoon antiship cruise missiles, mines, depth charges and a variety of other weapons. The P-8A generally would not operate in a high-threat environment but is equipped with various self-protection electronic warfare systems.
U.S. Navy:
The USN has 12 operational patrol squadrons (VPs) that deploy worldwide. Each squadron is assigned 6 P-8As and 12 crews. The force is evenly split between the U.S. east and west coasts, with 6 VPs homeported at NAS Jacksonville, Florida and 6 homeported at NAS Whidbey Island, Washington. There is also a single training unit, VP-30, at Jacksonville. There are also two Naval Reserve squadrons flying the P-8A. Other P-8As are assigned to test duties. The total number delivered to the USN is 138. The current budget submission proposes restarting production with a buy of 12 additional aircraft. These may be meant as attrition aircraft as the P-8 is likely to be in service for many years. To my knowledge, only one aircraft has been lost to date -- a P-8A landing at Kaneohe Bay, Hawaii, ran off the end of the runway into the sea and has been written off.
Indian Navy:
India was the first export customer for the P-8. As mentioned above, there were a number of differences that resulted in the Indian version being designated P-8I. After buying 12 aircraft, India decided to augment the force was another 6 P-8Is. The timing was unfortunate, though, with 2025 price increases. I believe that India has decided to go through with the buy. Given the world economic situation, I wouldn't want to bet on it.
Australia:
The Royal Australian Air Force selected the P-8A in 2007 and actually placed an order in 2012. The RAAF operates 14 P-8As, with the final aircraft delivered in 2026.
United Kingdom:
The RAF took delivery of its first Poseidon MRA Mk 1 in 2019. 9 aircraft are operated by two squadrons from RAF Lossiemouth.
Norway:
Norway ordered 5 P-8As in 2017 with deliveries complete by 2023.
New Zealand:
The RNZAF ordered 4 P-8As in 2019. and these aircraft were delivered in 2022-23.
Korea:
The ROKN also ordered P-8As in 2019. The aircraft were delivered in 2024.
Germany:
Germany initially ordered 5 P-8As in 2021 and then added 3 more in 2023.
Canada:
Canada's existing force of CP-140s is tired. Several years of studies and proposals culminated in an order for "up to 16" CP-8As in 2023. Delivery of the first aircraft has slipped from this year to 2027. Given cost increases, the ultimate number of aircraft might be reduced from 16. The plan is to station aircraft in both Nova Scotia and British Columbia.
Singapore:
The latest customer is Singapore, though no details as to the number of P-8s involved have yet been released.