59/DD-59) was a Tucker-class destroyer built for the United States Navy prior to the American entry into World War I.

Patrolling the Irish and Celtic Sea out of Queenstown, Ireland, Porter severely damaged the German submarine U-108 in April 1918.

In June 1924, Porter was transferred to the United States Coast Guard to help enforce Prohibition as a part of the "Rum Patrol".

The General Board of the United States Navy had called for two anti-aircraft guns for the Tucker-class ships, as well as provisions for laying up to 36 floating mines.

The sextet arrived at Queenstown, Ireland, on 4 May and began patrolling the southern approaches to the Irish Sea the next day.

[1] On 16 October 1917, Porter came to the aid of American destroyer Cassin,[10] which had been torpedoed by German submarine U-61 about 20 nautical miles (37 km) south of Mine Head, Ireland.

The Treasury Department eventually determined that the United States Coast Guard simply did not have the ships to constitute a successful patrol.

To cope with the problem, President Calvin Coolidge in 1924 authorized the transfer from the Navy to the Coast Guard of twenty old destroyers that were in reserve and out of commission.

[1] Designated CG-7, Porter was commissioned on 20 February 1925, and was stationed in New York for duties on the "Rum Patrol" to aid in the attempt to enforce prohibition laws.

[5] After the United States Congress proposed the Twenty-first Amendment to end prohibition in February 1933, plans were made for Porter to be returned to the Navy.