[1] In the President Coolidge twelve Babcock & Wilcox superheater type water tube boilers provided steam for main and auxiliary power.

[11] President Hoover and President Coolidge ran between San Francisco and Manila via Kobe and Shanghai, and some round the World voyages that continued from Manila via Singapore, the Suez Canal, the Mediterranean Sea, New York City, the Panama Canal and thence back to San Francisco.

Passenger luxuries included spacious staterooms and lounges, private telephones, two saltwater swimming pools, a barbers' shop, beauty salon, gymnasium and soda fountain.

[citation needed] In December 1937 President Hoover ran aground on the Taiwanese coast and was declared a total loss.

In March 1939 President Coolidge was the last ship to sight the custom-built Chinese junk Sea Dragon, built and sailed by American explorer Richard Halliburton, before she disappeared in a typhoon some 1,200 miles (1,900 km) west of the Midway Islands.

On December 7, 1941 Japan attacked Pearl Harbor and on December 19 President Coolidge evacuated 125 critically injured naval patients from Hawaii, cared for by three hastily assigned Navy nurses and two Navy doctors from the Philippines that were already among passengers being evacuated from the war zone that had now reached Hawaii.

On 12 January 1942 the first large convoy, including the large former ocean liners President Coolidge and SS Mariposa, to Australia after Pearl Harbor departed the United States carrying troops, supplies, ammunition and weapons, including P-40 fighters intended for the Philippines and Java with fifty of the planes carried by President Coolidge and Mariposa.

[14][15] Arriving Melbourne on 1 February in President Coolidge, along with supplies and munitions not intended for transshipment beyond Australia, were the officers, known as the "Remember Pearl Harbor" (RPH) Group, selected to form the staff of the US Army Forces in Australia (USAFIA) as the command structure for what was to be the Southwest Pacific Area was evolving.

In the spring of 1942, escorted by the cruiser USS St. Louis,[18] she took Manuel Quezon, President of the Philippines from Melbourne[19] to San Francisco.

Embarked were the 172nd Infantry Regiment, 43rd Division,[20] and a harbor defense unit intended to protect the airfield at Espiritu Santo that was providing bomber support for forces at Guadalcanal.

The second, Captain Elwood Joseph Euart, 103rd Field Artillery Regiment, had safely left President Coolidge when he heard that there were still men in the infirmary who could not get out.

An American recovery team arrived in February 2014 and, working with local operators, they found Euart's remains after 73 years, still with his dog tags and personal items, lying in deep silt in the bottom of the wreck.

The first preliminary Court of Inquiry convened 12 November 1942 aboard the destroyer tender USS Whitney on the orders of Admiral Halsey.

This outcome displeased the Navy Department, so Nelson was referred to a US Coast Guard Investigation Board on his return to the United States on 6 February 1943.

After the war, items such as the propeller blades, bunker oil, brass casings of shells, electric motors, junction boxes and copper tubing were salvaged from the ship.

[4][26] In 1980 Vanuatu won independence from France and Britain, and on 18 November 1983, the government of the new republic declared that no salvage or recovery of any artifact would be allowed from President Coolidge.

The depths involved mean that, with care and decompression stops, recreational divers can explore large parts of the wreck without specialized equipment.