Submarine Pen

A submarine pen (U-Boot-Bunker in German) is a bunker which is designed to protect submarines from air attack. The term is generally applied to submarine bases constructed during World War II, particularly in Germany and the occupied countries which were also known as U-boat pens (after the phrase "U-boat" to refer to German submarines).

Famous quotes containing the word pen:

    This is no rune nor symbol,
    what I mean is it is so simple
    yet no trick of the pen or brush
    could capture that impression;
    what I wanted to indicate was
    a new phase, a new distinction of colour.
    Hilda Doolittle (1886–1961)