Next, compare to the zones where pirates attacks used to occur (lightest orange color: 2005) and where they currently do (darkest orange color: 2010): Sea Lines of Communications in darker blue.
There's an obviously increased peacetime usefullness of Pakistan's P-3c's out to the Aden-Colombo line. Notice the route going into Karachi from approx. Salalah, Oman (last stop of Alamgir/McInerney on the way to Pakistan).
Hi res
In relation to chokepoints in the main Sea Lines of Communication in the Indian Ocean:
Tu-95 Bear
(Ferry) Range: 7,800 miles (12,550 km)
Tu-09 MS Bear
(Ferry) Range: 15,000 km (8,100 nmi, 9,400 mi) unrefueled
Tu-142M3 Bear-F MPA
Combat/operational radius: 6,500 km (3,454 nmi, 3,977 mi)
Il-38 May
(Ferry) Range: 9,500 km (5,130 nmi, 5,937 mi)
P-8 Poseidon
Operational Radius: 1,200 nmi (2,222 km) with 4 hours on station
Il-38 May and P-8 Poseidon both appaer to have similar of or maybe just slightly better range/staying power than P-3C. Tu-142 on the other hand has considerably longer range/staying power by comparison.