NAVYPEDIA

Photo

  Munro 1978

Ships

No	Name	Yard No	Builder	Laid down	Launched	Comm	Fate
WHEC715	Hamilton	1062	Avondale SY, Westwego	23.11.1965	18.12.1965	20.2.1967	to Philippines 5.2011 (Gregorio del Pilar)
WHEC716	Dallas	1101	Avondale SY, Westwego	7.2.1966	1.10.1966	1.10.1967	to Philippines 5.2012 (Ramon Alcaraz)
WHEC717	Mellon	1102	Avondale SY, Westwego	25.7.1966	11.2.1967	22.12.1967	in service (2019)
WHEC718	Chase	1103	Avondale SY, Westwego	15.10.1966	20.5.1967	1.3.1968	to Nigeria 5.2011 (Thunder)
WHEC719	Boutwell	1137	Avondale SY, Westwego	12.12.1966	17.6.1967	14.6.1968	to Philippines 7.2016 (Andres Bonifacio)
WHEC720	Sherman	1138	Avondale SY, Westwego	13.2.1967	23.9.1967	23.8.1968	stricken 3.2018, to Sri Lanka (ගජබාහු [Gajabahu])
WHEC721	Gallatin	1139	Avondale SY, Westwego	17.4.1967	18.11.1967	20.12.1968	to Nigeria 5.2014 (Okpabana)
WHEC722	Morgenthau	1177	Avondale SY, Westwego	17.7.1967	10.2.1968	14.2.1969	to Vietnam 5.2017 (CSB8020)
WHEC723	Rush	1183	Avondale SY, Westwego	23.10.1967	16.11.1968	3.7.1969	to Bangladesh 5.2015 (সমুদ্র অভিযান [Somudra Avijan])
WHEC724	Munro	1560	Avondale SY, Westwego	18.2.1970	5.12.1970	10.9.1971	in service (2019)
WHEC725	Jarvis	1561	Avondale SY, Westwego	9.9.1970	24.4.1971	30.12.1971	to Bangladesh 5.2013 (সমুদ্র জয় [Somudra Joy])
WHEC726	Midgett	1562	Avondale SY, Westwego	5.4.1971	4.9.1971	17.3.1972	in service (2019)

Technical data

Displacement standard, t	2716
Displacement full, t	3050
Length, m	106.7 wl 115.2 oa
Breadth, m	13.0
Draught, m	6.10
No of shafts	2
Machinery	CODOG: 2 Fairbank Morse diesels / 2 Pratt & Whitney gas turbines
Power, h. p.	7200 / 28000
Max speed, kts	20 / 29
Fuel, t	diesel oil 800
Endurance, nm(kts)	14000(11)
Armament	1 x 1 - 127/38 Mk 30, 2 x (1 - 12.7/90 + 1 - 81/12 M29 mortar), 2 x 3 - 324 Mk 32 TT, 1 HH-52A helicopter, hangar & deck
Electronic equipment	SPS-29D, SPS-64, SPG-35 radars, SQS-36 or SQS-38 sonar, WLR-1H(v)5, WLR-3 ECM suites
Complement	164

Standard scale images

Graphics

Project history

These large high-endurance cutters were among the first US warships lo be powered by gas turbines, Pratt & Whitney FT 4As in a CODOG (Combined Diesel or Gas turbine) system. Such propulsion was specifically justified by the combination of high endurance (I4,000nm at 11kts on diesels) and high maximum speed (29kts on gas turbines, with a range of 2900nm), the latter to run out to the scene of a rescue. There is also a retractable bow manoeuvring unit, described as useful for some oceanographic work. The unusual twin-funnel arrangement can be traced to the desire to place the helicopter pad at the most favourable point in the ship from the point of view of ship motion, about three-quarters of the way aft. The price paid is the narrowness of the hangar, which can accommodate only one HH-52 turbo-shaft helicopter. In the Perry class, a very similar configuration was originally selected (albeit with one rather than two shafts), but the uptakes were amalgamated when the design was altered to accommodate two helicopters: the hangar had to be widened and the helicopter pad consequently moved right aft.

The design originally called for a Hedgehog superfiring over the single 127mm/38 gun forward, but Hedgehogs were removed from those ships which had them; all have the standard pair of triple Mk 32 lightweight torpedo tubes controlled by a Mk 309 Panel.

Modernizations

1970s, all: - 2 x (1 - 12.7/90 + 1 - 81/12 M29 mortar); + 2 x 1 - 20/70 Mk 16

1988, Hamilton; 1989, Dallas, Mellon, Munro; 1990, Sherman; 1991, Chase, Boutwell, Morgenthau, Rush; 1992, Gallatin, Jarvis, Midgett: - 1 x 1 - 127/38, SPS-29D, SPG-35 radars, HH-52 helicopter; + 2 x 4 Harpoon SSM launchers (8 RGM-84, provision for); 1 x 1 - 76/62 Mk 75, 2 x 1 - 25/87 Mk 88 Bushmaster, 1 x 6 - 20/76 Mk 15 Phalanx, SPS-40B, SPS-64 (2nd), Mk 92, Mk 90 radars, 2x Mk 36 SRBOC decoy launchers, HH-65 helicopter

1992-1995, all: - 2 x 3 - 324 TT, SQS-36/38 sonar

1998-2000: - 2x SPS-64 radars; + SPS-64(v)6, SPS-73 radars, SCCS CCS

Naval service

No significant events.