World War I - Launching of R-21 submarine at Sued-Symbol, 1919. Caption: "American military personnel and spectators standing witness to the launch of US submarine, R-21, during World War I."

---

Size: 8369px × 5569px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -21, 111-sc-15429, 1919, 20th, action, activities, album, american, base, capture, celebration, century, ceremony, commemoration, commemorative, crew, documentary, effort, event, flag, historic, historical, history, launch, launching, maritime, military, moment, national, naval, navy, observance, officers, patriotism, photo, photograph, pride, sailors, ship, shipyard, states, strength, submarine, sued, symbol, symbolic, united, uss, vessel, war, warfare, warship, watercraft, witnessing, world