O class submarine may refer to:
- United States O class submarine
- Odin class submarine
- Oberon class submarine
- Several early submarine classes of the Royal Netherlands navy
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Famous quotes containing the word class:
“Each class of society has its own requirements; but it may be said that every class teaches the one immediately below it; and if the highest class be ignorant, uneducated, loving display, luxuriousness, and idle, the same spirit will prevail in humbler life.”
—First published in Girls’ Home Companion (1895)