House Flags of U.S. Shipping Companies: P

Philadelphia & Reading Transportation Line

Philadelphia & Reading Transportation Line, Philadelphia (Sources: Lloyds 1912, Wedge (1926)
Established by the Reading Railroad to deliver anthracite coal from northeastern Pennsylvania to New York and New England via Philadelphia. The flag was red with a black anchor set diagonally and a black diamond (presumably symbolizing hard coal) in each corner.
Joe McMillan, 14 November 2001

Philadelphia & Southern Mail Steamship Co

  by Joe McMillan

Philadelphia & Southern Mail Steamship Co. (Source: Manning, 1874)
No information on this 19th century company. The flag was red with a white disk.
Joe McMillan, 14 November 2001

Philadelphia Transatlantic Line (Charles M. Taylor's Sons)

  by Joe McMillan

Philadelphia Transatlantic Line (Charles M. Taylor's Sons), Philadelphia (Source: 1909 supplement to Flaggenbuch (1905)
No information, but an attractive flag--blue with a red vertical stripe at the hoist and a white three-leafed clover in the fly bearing the red letters PTL.
Joe McMillan, 14 November 2001

Philippines, Micronesia and Orient Navigation Company

Commonly referred to as PMOLine, in full 'Philippines, Micronesia and Orient Navigation Company', founded 1978 and based in San Francisco. Company history here: http://www.pmoline.com/history.html

The house flag is dark blue with a red central disk bearing what appears to be a white sail.
Jan Mertens, 2 April 2004

Phillips Petroleum Co

  by Joe McMillan

Phillips Petroleum Co, Bartlesville, Oklahoma (1917-present) Source: Styring (1971)
Phillips Petroleum was founded in 1917 by two brothers who had hit their first oil well in 1905. The "66" brand name came from a quip that a car operating on the company's fuel wasn't going just 60 miles per hour, but 66. The incident occurred on the famous U.S. Highway 66, which the company envisioned as the axis of its gasoline distribution network, so the design of the shield--which is the shape of the route markers for the U.S. (as opposed to interstate or state) highway system--has been used by the company since 1927. Phillips currently operates five tankers to and from Alaska through its Polar Tankers subsidiary. As of the early 70s, the house flag was light blue with the "66" shield in red, white, and black.
Joe McMillan, 14 November 2001

Pickands Mather Steamship Co

  by Joe McMillan

Pickands Mather Steamship Co, Duluth, Minnesota (Source: www.steamship.net (no longer available)
Pickands Mather was an iron ore mining and shipping company founded in 1883 by a group of Cleveland investors. Pickands Mather Steamship along with several other shipping subsidiaries of the company was merged into what is now Interlakes Steamship Co., formed in 1913, and later into a revamped, enlarged Interlakes in 1966. The parent company survived into the 1990s when it merged with Cleveland-Cliffs Iron Co. The flag of Pickands Mather was a red-white-blue vertical tricolor with the company monogram on the center in red.
Joe McMillan, 14 November 2001

Pioneer Line of Australia Packets

  by Joe McMillan

Pioneer Line of Australia Packets, New York (later Australia)(1852-present?) (Source: Chart: Private Signals of the Merchants of New York)
Roderick W. Cameron was a Canadian who came to New York, like many other Canadians, to enter the shipping business. In 1852, in conjunction with the shipping broker and agent John Ogden, he opened this line of clippers to take advantage of the Australian gold rush--the last of the major clipper companies to be created. The name of the firm was changed to R. W. Cameron & Co. in 1870. Cameron later settled in Australia, was knighted, and his company (I believe) still exists, although others may know better than I whether it is still in the shipping business. The flag was a white burgee with a red cross, on the center a white lozenge with a blue A for Australia. Note the similarity to the flags of David Ogden's Red Cross Line and John Ogden's Pioneer Line.
Joe McMillan, 14 November 2001

Pioneer Line of Australian Packets. Loughran (1979) appears to have got misled and shows this flag, though with a black "A", as being for John Ogden Pioneer Line.
Neale Rosanoski, 31 March 2004

Pittsburgh Steamship Company

  by Joe McMillan

Pittsburgh Steamship Company, Cleveland (later Duluth) (1899-1981) (Source: www.steamship.net (no longer available))
In its prime, by far the largest Great Lakes shipping company company, at least of those under the American flag, Pittsburgh Steamship was founded by Andrew Carnegie (and was later a subsidiary of US Steel) to transport iron ore from the Mesabi Range of Minnesota to the company's mills on the shores of Lake Michigan and Lake Erie. In the early 20th century it operated well over 100 ships and barges on the lakes. In 1949, it was operating 62 ships totalling 700,000 gross tons, a fleet exceeding those of most of the largest US ocean shipping companies at the time. In 1953 it was renamed the Pittsburgh Steamship Division of US Steel, and in 1981 it was merged with other US Steel fleets operating on the Great Lakes to form USS Great Lakes Fleet, which is still in operation, albeit with far fewer vessels. At least early on, the Pittsburgh Steamship house flag was an unusual elongated swallowtailed pennant with a kind of 19th century look, white with a blue triangle at the hoist bearing a white P, with red stripes along the upper and lower edges, each charged with 14 white stars.
Joe McMillan, 14 November 2001

See the last picture on this page, captioned "Pittsburgh Fleet Flag, 1960". The picture on the site is twice clickable and shows an additional star next to the 'P'. I cannot quite count the stars on the border but those in the upper row seem to be upside-down; a pity we cannot see the flag's tail completely. Lastly the 'P' seems to be on a trapezoid now rather than on a triangle.
Jan Mertens, 9 December 2005

Pocahontas Steamship Company

Pocahontas Steamship Company (pre 1915-post 1961)
This coastwise coal shipping line was a subsidiary of the Pocahontas Fuel Company and was mainly engaged in routes from Norfolk to New England. Its homeport is variously given as Salem, Norfolk, or New York. I have found two flags for this line:

    by Joe McMillan

The first flag from Wedge (1926) is a white burgee with the initials P.S.Co. and blue edging along the upper, lower, and fly edges. [wed51] shows this flag with blue strips along the upper and lower edges only.  The second flag is from U.S. Navy - a white flag with the head of an American Indian woman (obviously if not convincingly intended to be Pocahontas) above a red geometrical pattern.
Joe McMillan, 14 November 2001

   by Jarig Bakker

Pocahontas Steamship Co. The 1st flag said to be based on Brown 1951 does not agree with my copy or with Brown 1958 which both show a tapered swallowtail with a shallow fork, the top and bottom of the flag edged blue only i.e. not the fork, and the red letters being larger and in descending scale. Stewart (1953) and 1957 does however show a version with the fork also edged blue though again the letters are large and show a slight descending scale. According to Talbot-Booth (1936) the company originated as the Pocahontas Navigation Co.
Neale Rosanoski, 31 March 2004

image by Jan Mertens

An uncaptioned photo on this page is surely the flag of the Pocahontas Steamship Company although the picture on the Boatnerd site shows yet a fifth variant! This last version is a tapering swallowtail, bearing a white descending diagonal stripe (taking up almost half of the upper hoist, touching the upper edge, and completely taking up the lower swallowtail tongue; this leaves two triangles of which the upper one is blue and the lower one, red. In the white stripe are blue initials ‘P.S. Co.’ without serifs. The two triangles are unequal in surface or form surely but on the other hand the tongues are neatly divided blue above white.

Jan Mertens, 20 September 2005

Polarus Steamship Company

  by Joe McMillan

Polarus Steamship Company  (Source: U.S. Navy)
No information on the company. The flag was a white pennant with a blue-bordered white star surrounded by a blue circle; on the center of the star a red P.
Joe McMillan, 14 November 2001

Pollard Steamship Co.

  by Joe McMillan

Pollard Steamship Co, San Francisco (early 20th century) (Source: Lloyds 1912)
I have nothing on this company other than that it was in existence in the 1911-1912 period. The flag was a red swallowtail with a white disk bearing a blue P.
Joe McMillan, 14 November 2001

Polish American Navigation Co.

  by Grzegorz Skrukwa

Polish American Navigation Co, New York (1919-23) (Source: verbal description in North Atlantic Seaway IV:1557)
This was a line put together after World War I as a surrogate national line as the newly independent Republic of Poland was getting on its feet. A version of this flag is one of several proposed designs for a Polish merchant ensign. The flag was white with a red lozenge bearing an white eagle. Polish American was a US-flag carrier during its short existence.
Joe McMillan, 14 November 2001

Pope and Talbot Steamship Co.

by Jarig Bakker, based on the website of the National Maritime Museum.

From the website of the National Maritime Museum, "the house flag of Pope and Talbot Inc, San Francisco. A white rectangular flag showing a blue printed star in the centre bearing a white disc with the red letters 'PT'. There is a blue stitched inscription 'POPE & TALBOT' below. The flag is made of cotton fabric and is machine sewn. A rope is attached."
Jarig Bakker, 24 August 2004

by Jarig Bakker

Loughran (1979) has the flag with just the logo.
Jarig Bakker, 24 August 2004

Portland & Asiatic Steamship Co.

  by Joe McMillan

Portland & Asiatic Steamship Co, Portland, Oregon (Source: 1909 supplement to Flaggenbuch (1905))
The Portland & Asiatic was a subsidiary of the Oregon Railroad and Navigation Company, which was owned in turn by the Oregon Short Line Railroad, which in its turn was owned by the Union Pacific Railroad. It ran from Portland to San Francisco and thence to the Far East. A rather Soviet-looking flag: red with a white inverted star, with a double red and white border, and a white frame running inside the edges of the flag.
Joe McMillan, 14 November 2001

Prudential Steamship Corp.

  by Joe McMillan

Prudential Steamship Corp, New York (1933-?) (Source: U.S. Navy)
Prudential Lines, which focused throughout its history on service between the United States and the Mediterranean, was founded by Stephan Stephanidis, a Greek immigrant, in 1933 as a tramp steamer company with one antiquated freighter. During World War II Prudential was one of the general agents operating ships for the War Shipping Administration and seemed positioned to become a more major presence in the industry after the war. But a series of managerial blunders kept it perpetually on the brink of bankruptcy from the mid-50s to the late 90s. As far as I can tell, it is no longer is business, but I'm not sure what happened to it or exactly when. It was apparently teetering on the edge of extinction in 1998 when Rene de la Pedraja included it in his Historical Dictionary of the U.S. Merchant Marine. The flag was red with a white cross, on the center of the cross a white P on a small blue diamond.
Joe McMillan, 14 November 2001

   by Jarig Bakker

Prudential Steamship Corporation. By the early 1960s Lloyds is showing it as Prudential Lines Inc. and apparently around 1970 it merged with Grace Lines Inc. to form Prudential-Grace Line Inc. but within a couple of years the name apparently reverted back to Prudential Lines Inc. Of its last three ships it sold the barge carrier [lash ship] in 1989 whilst the two general cargo ships arrived at the shipbreakers in 1991 although by then they were owned by Vessels Charters Inc. indicating that Prudential had sold them earlier, possibly chartering them back. Prior to the merger, around 1968, there had been a flag change to a blue pennant with a large yellow "P" which was used as the basis for the flag for Prudential-Grace Line Inc. which saw what is described as a yellow outlinedstar [of 4 points] radiating from the "P" to the flag edges. These flags are shown by Loughran 1979 whilst Styring in Brown 1978 notes the last changes but describes the flag "P" as being white, and makes no mention of the earlier 1968 change, continuing to show the original version as still operating up until the merger.
Neale Rosanoski, 31 March 2004

Puerto Rico Towing & Barge Co.

  by Jarig Bakker

This company is part of Great Lakes Group. The flag is red charged with a green diamond and white PRT.
Source: http://www.thegreatlakesgroup.com/puerto.htm
Dov Gutterman, 11 October 2003

Puget Sound Freight Line Inc.

 image by Jarig Bakker, 5 February 2006

Puget Sound Freight Line Inc., Seattle, Wa - flag quartered red and white; on red white "PS"; on white a black truck and tug.
Source: Loughran (1995)
Jarig Bakker, 5 February 2006

Puget Sound Navigation Co.

  by Joe McMillan

Puget Sound Navigation Co, Seattle (1913-present)  (Source: Stewart, 1953)
As someone noted when I posted the flag of the original Black Ball Line, this company is also known as the Black Ball because of its red flag with a black disk. It was created in 1913 by merging several earlier Puget Sound ferry companies and by 1935 had a virtual monopoly. By 1949, it was operating 23 ships transporting vehicles, freight, and passengers within Puget Sound. In 1951, the State of Washington bought out the entire route system except for the line connecting Seattle, Port Angeles, and Vancouver, British Columbia. The Black Ball still operates a single ship between Port Angeles and Vancouver.
Joe McMillan, 14 November 2001

Pure Oil Co.

     by Joe McMillan

Pure Oil Company, Chicago (1895-?)
The Pure Oil Company was originally established in Pennsylvania but later moved its headquarters to Chicago. Its main marketing area was in the Midwest and its tanker operations therefore were predominantly on the Great Lakes and the Midwestern rivers. I have found two flags:
The first image (Source: www.steamship.net (no longer available)) is divided per saltire, red and white, with a blue rectangle on the center bearing the white initials POC.
The second image (Source: U.S. Navy) is white with the corporate logo in blue.
Joe McMillan, 14 November 2001