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Here at LSOZI, we take off every Wednesday for a look at the old steam/diesel navies of the 1833-1954 period and will profile a different ship each week. These ships have a life, a tale all their own, which sometimes takes them to the strangest places.- Christopher Eger

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Warship Wednesday, July 30, 2025: Ocean Station Savior

Above we see the 255-foot Owasco-class gunboat, U.S. Coast Guard Cutter Pontchartrain (WPG-70) during rough weather while slogging along in the Pacific, 8 January 1950.

Commissioned during the last days of WWII, some 80 years ago this week, “Ponch” had a lengthy career that included lots of dreary service on Ocean Stations (13 of those shifts during Korea), a Vietnam Market Time deployment, and numerous rescues at sea– including one that was spectacular.

The 255s

The Coast Guard got seriously ripped off by the White House in early 1941 when 10 of its best (and newest) blue water cutters, the entire 250-foot Lake (Chelan) class, were transferred to the Royal Navy as part of FDR’s “Bases for Destroyers” deal. These hardy 2,000-ton turbine-powered low-mileage cutters became Banff-class sloops in RN service and saw lots of service, with three lost during the war and a fourth damaged so badly she was scrapped in the Philippines.

By 1942, with it apparent that the old Lakes would likely never return from overseas (at least not for years) and the U.S. firmly in the war, the USCG moved to build a replacement class of ten ships. To this number was added another three hulls, to finally replace the ancient cutters Ossipee (165 ft, circa 1915), Tallapoosa (165 ft, circa 1915), and Unalaga (190 ft, circa 1912).

Originally a 312-foot design that was a simplified follow-on to the service’s seven well-liked turbine-powered 327-foot Treasury (Campbell) class cutters, which had a provision to carry a JF-2/SOC-4 floatplane as well as two 5″/51s and ASW gear, this soon morphed into a much more compact 255-foot hull with an even heavier armament. The 255-foot oal guideline (245 at the waterline) conceivably allowed them to pass through the then 251-foot third lock of the Welland Canal in Ontario if needed, so they could operate on the Great Lakes at some future date.

The 1945 outfit for the class was twin 5″/38 DP mounts fore and aft, backed up by two quad 40mm Bofors, a Hedgehog ASWRL, two depth charge racks, and six K-guns. Overloaded already in such an arrangement, there was never a floatplane fitted, although the superstructure was divided into two islands to allow a midship location on deck for such a contraption.

While most carried SR and SU radar sets, Mendota and Pontchartrain carried more updated SC-4 and SF-1 radar sets. They all carried a QJA sonar set and Mk 26 FCS.

Powered by twin Foster-Wheeler 2 drum top-fired Express boilers and a 3,200 kVa Westinghouse electric motor driven by a turbine, these cutters were good for 19 knots but could sail 10,000nm at 10 knots economically on 141,755 gallons of fuel oil, giving them extremely long legs. Able to navigate in three fathoms of sea water, they could get into tight spaces.

As detailed by the USCG Historian’s Office:

The 255-foot class was an ice-going design. Ice operations had been assigned to the Coast Guard early in the war, and almost all new construction was either ice-going or icebreaking.

The hull was designed with constant flare at the waterline for ice-going. The structure was longitudinally framed with heavy web frames and an ice belt of heavy plating, and it had extra transverse framing above and below the design water line. Enormous amounts of weight were removed using electric welding. The 250-foot cutters’ weights were used for estimating purposes. Tapered bulkhead stiffeners cut from 12” I-beams went from the main deck (4’ depth of web) to the bottom (8” depth of web). As weight was cut out of the hull structure, electronics and ordnance were increased, but at much greater heights. This top weight required ballasting the fuel tanks with seawater to maintain stability both for wind and damaged conditions.

Eleven of the class were to be built on the West Coast at the Western Pipe and Steel Company in San Pedro, California, with the first, Sebago, laid down on 7 June 1943.

Cost per hull was $4,239,702 in 1945 dollars.

Meet “Raunchy Paunchy”

Our subject is the second USCGC Pontchartrain, following in the footsteps of a circa 1928 Lake-class cutter which, transferred to Royal Navy 30 April 1941 as part of the Bases for Destroyers deal, entered service as HMS Hartland (Y00) and, 17 convoys later, was sunk by the French during Operation Reservist, the effort to seize the port of Oran as part of the Torch landings 19 months later.

While there was one CSS Pontchartrain on the Mississippi (for obvious reasons) during the Civil War, the U.S. Navy has never used the name.

One of only two 255s built on the East Coast at the USCG Yard in Curtis Bay, Maryland (alongside sister USCGC Mendota, WPG-69), WPG-70 was the final Owasco-class cutter laid down by hull number, but far from the last completed. They were part of the initial six ships laid down in 1943, while the other eight all had their keels laid down in 1944. Both WPG-69 and WPG-70 were laid down on 5 July 1943.

Launched as Okeechobee on 29 February 1944, our subject was commissioned as USCGC Pontchartrain on 28 July 1945. Had the war not ended six weeks later, she surely would have made for the Panama Canal by Halloween and seen service in the Pacific with her sisters.

Eight of her 12 sisters were completed after VJ Day.

Not destined to join Halsey for the push on Tokyo, Pontchartrain instead clocked in on a series of more than a dozen Ocean Stations, mid-way navigation, weather, and SAR points set up post-war to help trans-oceanic flights stay on path. Usually a three-week deployment, it was thankless and, on the very beamy 255s, sometimes one heck of a ride punctuated by regular twice-daily weather balloon launches, 450-foot bathythermograph drops every four hours, and an unceasing radio check.

The cutters steamed an average of 4,000 miles per patrol, and, with transit time included, staffed the station for an average of 700 non-stop hours.

One crew member noted: “After twenty-one days of being slammed around by rough, cold sea swells 20 to 50 feet high, and wild winds hitting gale force at times, within an ocean grid the size of a postage stamp, you can stand any kind of duty.”

For the record, as noted by Scheina, Pontchartrain stood the lonely guard on 61 occasions:

Atlantic, while stationed at Boston and Norfolk:

• 20 Oct-10 Nov 46 served on OS C
• 6-11 Nov 48 served on OS Easy
• 23 Jan-12 Feb 49 served on OS B
• 18 Mar-8 Apr 49 served on OS Fox
• 17 May-7 Jun 49 served on OS Easy
• 17 Jul-6 Aug 49 served on OS Dog

Pacific, while stationed at Long Beach:

*During the Korean War:

• Feb-13 Mar 50 served on OS Oboe
• 14 May-5 Jun 50 served on OS Peter
• 4-27 Aug 50 served on OS Nan*
• 6-26 Mar 51 served on OS Sugar*
• 13 Apr-5 May 51 served on OS Nan*
• 8-29 Jul 51 served on OS Nan*
• 21-29 Oct 51 served on OS Nan*
• Nov-2 Dec 51 served on OS Nan*
• 23 Dec 51-13 Jan 52 served on OS Uncle*
• 23 Feb-16 Mar 52 served on OS Sugar*
• 5-25 Apr 52 served on OS Sugar*
• 29 Jun-20 Jul 52 served on OS Nan*
• 22 Sep-12 Oct 52 served on OS Nan*
• 28 Jan-18 Feb 53 served on OS Victor*
• 30 Mar-20 Apr 53 served on OS Sugar*
• 2-23 Jul 53 served on OS Uncle*
• 25 Oct-15 Nov 53 served on OS Uncle
• 28 Feb-10 Mar 54 served on OS Nan
• 25 Jul-15 Aug 54 served on OS Nan
• 17 Oct-7 Nov 54 served on OS Nan
• 19 Dec 54-10 Jan 55 served on OS Nan
• 15 May-5 Jun 55 served on OS Nan
• 18 Sep-8 Oct 55 served on OS Nan
• 12 Feb-4 Mar 5 served on OS November
• 8-28 Jul 56 served on OS November
• 30 Sep-16 Oct 56 served on OS November
• 21 Dec 56-13 Jan 57 served on OS November
• 13 May-9 Jun 57 served on OS November
• 22 Sep-13 Oct 57 served on OS November
• 17 Feb-8 Mar 58 served on OS November
• 13 Jul-3 Aug 58 served on OS November
• 14 Oct-4 Nov 58 served on OS Romeo
• 7-28 Dec 58 served on OS November
• 18 Jan-7 Feb 59 served on OS November
• 27 Sep-17 Oct 59 served on OS November
• 20 Feb-12 Mar 60 served on OS November
• 1 16 Jul-6 Aug 60 served on OS November
• 11-31 Dec 60 served on OS November
• 7-27 May 61 served on OS November
• 10-31 Mar 68 served on OS November
• 12 May-2 Jun 68 served on OS November
• 14 Jul-4 Aug 68 served on OS November
• 25 Aug-15 Sep 68 served on OS November
• 19 Jan-9 Feb 69 served on OS Victor
• 2-23 Mar 69 served on OS Victor
• 25 May-14 Jun 69 served on OS November
• 17 Aug-7 Sep 69 served on OS November
• 30 Nov- 18 Dec 69 served on OS November
• 22 Aug-12 Sep 71 served on OS Victor
• 3-24 Oct 71 served on OS Victor
• 8-28 Jun 72 served on OS Charlie
• 15 Aug-8 Sep 72 served on OS Delta
• 29 Jan-23 Feb 73 served on OS Echo
• 24 Apr-17 May 73 served on OS Delta
• 6-26 Sep 73 served on OS Charlie

During this service, her appearance changed significantly.

Laid up from 17 October 1947 to 5 September 1948 as the service ran into post-war budget cuts, she emerged from Curtis Bay with most of her armament removed. Gone were the twin 5-inchers, replaced by a single mount forward. Also deleted were her aft Bofors and all her ASW weapons save for Hedgehog. This nearly halved her complement from over 250 to 130.

Pan American Flight 6

It was while on Ocean Station November that our cutter, on 16 October 1956, stood by Pan American World Airways’ Flight 6, Boeing 377 Stratocruiser N90943, the “Sovereign of the Skies,” as she pulled off a water landing while en route from Honolulu to San Francisco.

The clipper, under the command of Pan Am Capt. Richard N. Ogg, with 31 souls aboard, was quickly running out of fuel with a windmilling No. 1 prop and a shutdown No. 4 engine, while still some 250nm out from the California coast.

Nearing OS November, Ogg radioed Pontchartrain, under CDR William K. Earle (USCGA 1940), who provided sea state and weather data to bring the clipper down easily.

The cutter then made ready for SAR and laid a trail of foam to mark the best course, a wet “runway” on the Pacific.

The clipper ditched less than 2,000 yards away, just after sunrise.

As noted by This Day in Aviation:

At 6:15 a.m., at approximately 90 knots air speed, the Boeing 377 landed on the water. A wing hit a swell, spinning the airplane to the left. The tail broke off, and the airplane began to settle.

Injuries were minor, and all passengers and crew evacuated the airliner. They were immediately picked up by Pontchartrain.

Captain Ogg and Purser Reynolds were the last to leave the airplane.

Twenty minutes after touching down, at 6:35 a.m., Sovereign of the Skies sank beneath the ocean’s surface.

A USCG film about the incident, including original footage.

Besides Pan Am Flight 6, Pontchartrain escorted the disabled American M/V John C (1950), assisted the disabled F/V Nina Ann (1955), assisted USS LSM-455 aground on San Clemente Island, the disabled yacht Gosling, and the disabled F/V Modeoday (1957), aided the disabled yacht Intrepid (1958), the F/V Carolyn Dee (1959), went to the assistance of M/V Mamie and rescued three from the ketch Alpha (1960), medevaced a patient from USNS Richfield (1961), and assisted the disabled F/V Gaga (1963).

She was a lifesaver.

She was also a fighter.

War!

A quarter-century after joining the fleet, Pontchartrain was finally sent to combat.

She was assigned to Coast Guard Squadron Three, working in the Vietnam littoral, from 31 March to 31 July 1970. While her 13 stints on wartime Ocean Stations during the Korean War allowed her crew to earn Korean Service Medals, Vietnam was going to be a deployment of naval gunfire support in the littoral, rather than one of quiet radio and weather watches.

By this time, the 255s sported SPS-29 and SPS-51 radars, and some had provision for ASW torpedo tubes abeam of the superstructures, the latter aided by SQS-1 sonars. As such, they had been changed from gunboats to the more friendly “high endurance cutters,” or WHECs.

Joining CGRON3’s fifth deployment to Southeast Asia, Pontchartrain was the “old man” teamed up with four brand-new 378-foot gas turbine-powered cutters, USCGC Hamilton, Chase, Dallas, and Mellon. Whereas nine of her sisters had been sent to Vietnam previously, Pontchartrain was the last Owasco to pull the duty.

While the individual figures for Pontchartrain aren’t available, the large cutters of CGRON3 conducted no less than 1,368 combined NGFS missions during Vietnam, firing a staggering 77,036 5-inch shells ashore. Keep in mind that most of these cutters only carried about 300 rounds in their magazines, so you can look at that amount of ordnance expended as being something like 250 shiploads.

Check out this deck log for one day in July 1970, with Pontchartrain firing 175 rounds by early afternoon against a mix of targets.

Powder and shell consumption was so high that some cutters would have to underway replenish or VERTREP 2-3 times a week while doing gun ops.

Returning to Long Beach, Pontchartrain settled back into her normal routine and continued Ocean Station, LE, and SAR work, along with the occasional reservist cruise.

In April 1973, the Coast Guard announced that, in conjunction with the U.S. withdrawal from Vietnam and the increased use of satellites, the OS program would be discontinued and 10 aging cutters retired– nine of them 255s. Sisters Sebago and Iroquois had already been put out to pasture.

Pontchartrain decommissioned on 19 October 1973, and by the following May, all her sisters had joined her. They would be sold for scrap before the end of 1974.

Epilogue

Some of Pontchartrain’s logs are digitized in the National Archives.

As for her skipper during the Pan Am Flight 6 rescue, CDR William K. Earle would go on to command the tall ship Eagle during Operation Sail—staged in concert with the 1964 World’s Fair—when 23 such ships assembled in New York Harbor. Retiring as a captain, he penned several articles for Proceedings, was executive director of the USGCA Alumni Association, and editor of the group’s journal. The Association maintains the annual Captain Bill Earle Creative Writing Contest in his honor. Captain Earle passed away in March of 2006.

Sadly, there has not been a third USCGC Pontchartrain.

Meminisse est ad Vivificandum – To Remember is to Keep Alive

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