PLB - Personal Locator Beacon
Category: - Maritime - Risk - Acronym

Plimsoll Mark - A mark placed on the ship's side to indicate maximum allowable draft.
Category: - Maritime

POB - Persons On Board
Category: - Maritime - Risk - Acronym

POC - Probability Of Containment: The probability that the search object is contained within the boundaries of a region, segment, or other geographic area. Regional POCs are generally determined by consensus and scenario analysis. Segment POCs may be computed from regional probability densities and segment areas.
Category: - Maritime - Risk - Acronym - SAR

POD - Probability Of Detection: The percentage of probability that if a subject was actually in the search area that the subject would have been located (detected) by the search effort.
Category: - Maritime - Risk - Acronym - SAR

Point - A zero dimensional map feature, such as a single elevation mark as specified by at least two coordinates.
Category: - GIS

Point Feature - A geographic feature recorded on a map as a location. Example: a single house.
Category: - GIS

Polygon - A many-sided area feature consisting of a ring and an interior. An example is a lake on a map.
Category: - GIS

Poop - The after, upper portion of the hull, often containing the steering gear.
Category: - Maritime

Poop Deck - The first deck above the shelter deck at after end of a vessel.
Category: - Maritime