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What does PD stand for?

PD stands for Periscope Depth

This definition appears frequently and is found in the following Acronym Finder categories:

  • Military and Government

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We have 132 other meanings of PD in our Acronym Attic

Samples in periodicals archive:

According to the US officials, the Jacksonville surfaced from periscope depth to check whether there was any damage inflicted on the unidentified vessel, which "continued on a consistent course and speed offering no indication of distress or acknowledgement of a collision.
On Thursday, 8 April 1981, the nuclear-powered ballistic missile submarine USS George Washington (SSBN 598) was cruising at periscope depth in bad weather south of Sasebo, Japan, en route to a port visit in South Korea when it collided with a small Japanese commercial cargo ship.
But in a Senior Service first, each rose to periscope depth to make radio communication with The Mirror and receive a faxed version of Sub Mirror.
Seacrest apparently failed to report that sonar readings showed the Ehime Maru was at 3,640 meters and closing when the sub rose to periscope depth to survey the ocean surface for ships.