Datu Kalantiaw Class Frigate

BRP Rajah Humabon (PF11)
(In Public Domain)

The Cannon class destroyer escorts were built primarily for ocean anti-submarine warfare escort service during World War II. The lead ship, USS Cannon (DE-99) was commissioned on 26 September 1943 at Wilmington, Delaware. Of the 116 ships ordered 44 were canceled and six commissioned directly into the Free French Forces. Destroyer escorts were regular companions escorting the vulnerable cargo ships.

The class was also known as the DET type from their Diesel Electric Tandem drive^. The DET's substitution for a turbo-electric propulsion plant was the primary difference with the predecessor Buckley ("TE") class. The DET was in turn replaced with a direct drive diesel plant to yield the design of the successor Edsall ("FMR") class.

Under the Philippine Navy, it was re-clasfied as a Frigate and todate, BRP Rajah Humabon (PF-11) formerly the USS Atherton (DE-169), remains as the only confirmed commissioned ship of this class as of 2010.

In Service:

1. BRP Rajah Humabon (PF11)

Source:

Wikipedia - Canon Class Destroyer Escort

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Gregorio del Pilar Class Frigates

BRP Gregorio del Pilar (PF15)
(Under Creative Commons)

The Gregorio del Pilar class is a ship class urrently in service to the Philippine Navy, and are currently its largest class of naval combatants in its fleet.   

Formerly used by the US Coast Guard as Hamilton class high endurance cutters, Under the Philippine Navy, after undergoing upgrades and modification it was classified as Frigates.

In Service:

• BRP Gregorio del Pilar (PF15)
• BRP Ramon Alcaraz (PF16) - Currently undergoing refit and modifications

BRP Ramon Alcaraz (PF16)
(Under Creative Commons)

General Characteristics:

Type:	Frigate
Displacement:	3,250 tons
Length:	378 ft (115 m)
Beam:	43 ft (13 m)
Draft:	8.75 ft (2.67 m)
Installed power:	5,800 hp (4,300 kW)
Propulsion:	Combined diesel or gas (CODOG) system 2× Fairbanks-Morse 38TD8-1/8-12 12-cylinder diesel engines generating 7,000 hp (5,200 kW) 2× Pratt & Whittney FT4A-6 gas turbines producing 36,000 hp (27,000 kW)
Speed:	28 knots (52 km/h) max
Range:	14,000 nautical miles (25,900 km)
Endurance:	45 Days
Boats and landing craft carried:	Two RHIB
Complement:	80
Sensors and processing systems:	Raytheon/Furuno AN/SPS-73 navigation and surface search radar and Sperry Mk 92 mod. 1 Fire Control System
Armament:	1 x Oto Melara Mk.75 76mm/62 gun 6 x M2 Browning 12.7mm/50 machine guns 2 x Loral Hycor Mk.36 6-barrelled Super Rapid Blooming Offboard Chaff (SRBOC) decoy launchers
Aircraft carried:	1 x BO-105C

Source:

Wikipedia - Gregorio del Pilar Class Frigate

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