SS Ruth Kellogg Ruth Kellogg was a tanker that was built in 1920 as the Design 1025 Hog Islander Calaumet by American International Shipbuilding , Hog Island , Philadelphia , Pennsylvania , United States for the United States Shipping Board ( USSB ) . Completed as Vaba , she was converted to a tanker in 1921 . A sale in 1929 saw her renamed " Ruth Kellogg " . In 1940 , she was transferred to the British Ministry of War Transport ( MoWT ) . Renamed Empire Dolphin in 1941 , she served until 1947 when she was scrapped . Description . The ship was built in 1920 by American International Shipbuilding , Hog Island , Philadelphia , Pennsylvania . She was yard number 1540 . The ship was long , with a beam of . She had a depth of . As built , she was assessed at 5 , 500 GRT . The ship was propelled by a steam turbine , driving a single screw propeller , it could propel her at . History . " Calaumet " was launched in 1920 , and completed that year as the cargo ship " Vaba " for the USSB . Allocated the United States Official Number 220781 , She was operated by Charbonneau Rajola Corporation , New York , until 1921 and then returned to the USSB , which had her converted to a tanker by the Curtis Bay Copper & Iron Works , Curtis Bay , Baltimore , Maryland . She was assessed as 5 , 037 GRT , 3 , 077 NRT after conversion . In 1923 , she was sold to the American - Italian Steamship Co Inc , New York and then resold to Tankers Corporation , New York later that year . In 1924 , " Vaba " was sold to the Steamship Vaba Corporation , New York . She was sold to the Kellogg Steamship Corporation , New York in 1929 , and renamed " Ruth Kellogg " . The Code Letters MBSN were allocated . She was placed under the management of the US Tankship Corporation , New York . On 8 May 1931 , " Ruth Kellogg " caught fire south of Cape Hatteras , North Carolina , United States . The stood by , ready to assist if needed . The fire was extinguished the next day , and " Ruth Kellogg " proceeded to New York , arriving on 11 May . With the reallocation of Code Letters in 1934 , " Ruth Kellog " was allocated KDIP . In January 1935 , " Ruth Kellogg " was reported to have come ashore and subsequently refloated , arriving at Baltimore , Maryland on 18 January . In May 1935 , she was reported to have come ashore at Philadelphia , Pennsylvania , but was refloated undamaged with the assistance of a tug . In 1940 , " Ruth Kellogg " was sold to the MoWT . She was placed under the management of Gow , Harrison & Co Ltd . The United Kingdom Official Number 168179 and Code Letters MNPP were allocated . She departed from Curaçao , Netherlands Antilles on 11 May for Kingston , Jamaica , arriving three days later and sailing the same day for Bermuda , where she arrived on 20 May . She was a member of Convoy BHX 45 , which departed from Bermuda on 20 May and joined Convoy HX 45 on 29 May . HX 45 had departed from Halifax , Nova Scotia , Canada on 24 May and arrived at Liverpool on 8 June . " Ruth Kellogg " was carrying fuel oil , and was bound for Brest , France , where she arrived on 7 June . She departed two days later for Barry , Glamorgan , where she arrived on 30 June . Departing three days later , she arrived at the Clyde on 4 July . " Ruth Kellogg " was renamed " Empire Dolphin " in 1941 . She apparently spent the war years in home waters , although there are several large gaps in the records of her movements . On 2 March 1942 , she was involved in a minor collision with , which was holed above the waterline but remained operational . She served until 1947 , when she was scrapped at Briton Ferry , West Glamorgan .