Martin P4M Mercator
1946
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Martin P4M Mercator

The US Navy made several attempts to gain the benefit of high over-target performance combined with long range by introducing mixed powerplant. The Martin Model 219 patrol bomber represented one of the results of such a specification, two XP4M-1 prototypes being ordered on 6 July 1944. The first was flown on 20 September 1946 as a cantilever shoulder-wing monoplane with retractable tricycle landing gear. Its powerplant comprised two 2218kW Pratt & Whitney R-4360-4 Wasp Major radial engines, but each nacelle also incorporated a 17,350kg thrust Allison J33-A-17 turbojet. After a protracted development programme 19 P4M-1 production aircraft were built, the first being delivered to US Navy Squadron VP-21 on 28 June 1950, and all served with this unit. Most of them were converted into P4M-1Q Elint aircraft, one being shot down.


Specification 
 MODELP4M-1
 ENGINE2 x Pratt Whitney R-4360-20A piston engines, 2424kW + 2 x Allison J33-A-10A, 2087kg
 WEIGHTS
    Take-off weight40000 kg88185 lb
 DIMENSIONS
    Wingspan34.75 m114 ft 0 in
    Length25.50 m84 ft 8 in
    Height7.95 m26 ft 1 in
    Wing area121.79 m21310.94 sq ft
 PERFORMANCE
    Max. speed660 km/h410 mph
    Ceiling10545 m34600 ft
    Range4570 km2840 miles
 ARMAMENT2 x 20mm cannons, 4 x 12.7mm machine-guns, 2700kg of bombs

Comments1-20 21-40 41-60
Willis E.Vanderberg, willis.vanderberg=gmail.com, 08.01.2014

The squadron in Port Lyautey was a VP not a VR.My error.

Willis E. Vanderberg, willis.vanderberg=gmail.com, 08.01.2014

I was stationed in Port Lyautey French Morocco in 53-54 VR-24 was flying this type of aircraft.I was a member of the crash crew when one P4M landed with the gear up and smashed the radar dome all to pieces.Because of the J-33 in the Nacelles the landing gear was a long legged affair that folded outboard up aginst the wing bottom. We raised the old girl with a bunch of life rafts and lowered the gear.

John Ivory, gaman45=hotmail.com, 23.10.2013

Looking for people who knew my Father JOHN E.IVORY. He flew out of Sangley Point and was a bow gunner on the P-4M's. I believe he was NAS Whiby Island as well, have a class or squadron photo with a P4M as the backdrop.

Patricia Hampton Kinzie, pat.kinzie=gmail.com, 07.09.2013

Do anyone have any information for me to include in my father's memoirs about the air crash on 19 Jan 1960 near Adana, Turkey? My father, LtCmdr Warren Jack Hampton, was co-pilot and died that day. I am gathering information for a family history. I don't understand the nature of the radar failure?

Jim Edixon, JamJim007=aol.com, 26.08.2013

Pilot - Flew with Hap Sweeten 1953 -1955. Flew 124362
when the left engine tore off - not something you would
care to have happen.Was flying '62 when it was attacked by
Migs April 1955.Had 124365 blow the right engine at 100 feet on take-off.
The P4M would climb 4000 ft/min at max gross weight on
take-off.
I enjoyed flying DC-9s and 727s later but the P4M remained
closest to my heart.

stephen fontenot, stevofon1965=live.com, 17.06.2013

my dad J.Y. Fontenot left me a beltbuckle with 1952 P4M sangley point on it he talked about the plane and the phillipines quite a bit over the years. would love to hear from anyone who might have known him

Norm Anderson, norm-karen=comcast.net, 17.01.2013

I was in VQ-2 from 1957-1961 and flew as radar operator in the P4M-1Q many times. I was at Incirlic Air Base in Turkey the night one of our P4Ms flew into the side of a mountain on the way in from Spain. All 16 crewmen were killed including my best friend. Toward the end of the time we had them there were a lot of problems, fires, engines going out and were finally replaced with A3D and WV. The plane was fun to fly in, especially with a hotrod pilot.

Carol Bauer, cabbwww=aol.com, 01.12.2012

My dad, JIM BAUER, crewed/electronics? in this plane out of the Philippines and Okinawa. I'm looking for anyone who night have known him. He wouldn't talk about the work, other than it was always at night, was secret and dangerous. I would love to hear more from those who were there. Thank You!

Carol Bauer, cabbwww=aol.com, 01.12.2012

My dad, JIM BAUER, crewed/electronics? in this plane out of the Philippines and Okinawa. I'm looking for anyone who night have known him. He wouldn't talk about the work, other than it was always at night, was secret and dangerous. I would love to hear more from those who were there. Thank You!

Tom Glover, thomas.glover=erau.edu, 19.11.2012

I was a CAC and AD2 F/C on both the P4M and the A3 (1956-58), Iwakuni, and made the deployment to Sheyma. I remained on active duty for total of 36 years, flew as P2V F/C (VP 46, P3 F/E), CWO VP47, retired as a LDO CDR. 1991. Loved the P4!!!

JIM TOUHEY, jim2e=comcast.net, 27.10.2012

SAW THE P4M MANY TIMES I WAS A FLIGHT CORPRMAN WITH VR-- 24 FLYING OUT OF NAS PORT LYAUTEY FRENCH MOROCCO IN 1951/52.IT WAS QUITE A SIGHT TO SEE THEM TAKE OFF AND LAND. ONE OF THE BEST LOOKING PLANES ON STATION. JIM TOUHEY,FORMER HM2,AC USN

Mark Baker Jr, tsgtbaker=charter.net, 19.09.2012

My father flew the P4M-Q1 with VP21 he loved the aircraft, he talked about the plane and missions,he was radio.He was at pax river 1951 thru 1953

Jack W., Panther_GK=hotmail.com, 28.08.2012

Grandfather was a pilot on the P4M....At the time Lt. Louis V Roberts...

Looking into his long history with the Navy...Very impressive A/C and sad to see only 19 were made with few destoryed.

George Sutton, gsutton888=gmail.com, 06.07.2012

The P4M was perfect for aerial mining and probably the easiest airplain in which I qualified! Politics killed it!

Bill Cunningham, talksalotatu=aol.com, 22.04.2012

1952-54 Sangley Point. Ordinanceman in flight crew and spent time in the tail turret.
VW-1 Lt Commander Douglas, later Sweeton.

Richard (Dick) Herkert, herkert=herkertintl.com, 01.04.2012

Great Bird! Many exciting darkened-ship flights out of NS Sangley Point, PI, as the radar operator/technician, airborne electrician and bow gunner 1952-54. Took home my wife of now 57 years and counting. Looking for squadron buddies.

Richard (Dick) Herkert, herkert=herkertintl.com, 01.04.2012

Many darkened-ship exciting flights out of NS Sangley Point, Philippine Islands, 1952-54 as the AT radar operator/technician, airborne electrician and bow gunner. Married my wife of now 57 & counting delightful years.

Joe L. Stauffer ADR-2, staufferized=cox.net, 16.11.2011

VQ-1, Iwakuni, 1956-1958 CAC and 2-PC. One of the most unique planes I ever worked on. Memories never to be forgotten including the squadron personell and how we fixed a prop that was "not repairable".

Tom Hanneman, tndhanneman=yahoo.com, 24.10.2011

I was an E.T. In VQ-1 from 1959 to 1961. I remember her well I even have a tie clasp, I got in Japan, in the shape of the P4M. VQ-1 moved from MCAF Iwakuni to NAS Atsugi in late 1959 or early 1960.

lorraine mayer, dollygra=gmail.com, 28.09.2011

My husband,donald mayer ,was the pilot on that june 16th flight .He loved that big old P4M and he loved his crew!!
He died on aug.2nd,2010. I was in Iwakuni with our family
from 1958-1960. Would like hearing from anyone who might
remember any of us.

1-20 21-40 41-60

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