hydrographic terms

NOS
 
    Anch     Anchorage
    Apprs     Approach, Approaches
    B     Bay, Bayou
    Bk     Bank
    Chan     Channel
    Co rf; Rf     Coral reef; Reef
    Cr     Creek
    Cr     Cove
    Entr     Entrance
    Est     Estuary
    Fd     Fjord
    G     Gulf
    In     Inlet
    L     Loch, Lough, Lake
    Lag     Lagoon
    Le     Ledge
    Mt     Mount, Mountain
    Mth     Mouth
    Pass     Passage, Pass
    Pk     Peak
    Rd     Roads, Roadstead
    Rf; Co rf     Reef; Coral reef
    Sd     Sound
    Shl     Shoal
    Str     Strait
       Other Terms
    anc     ancient
    approx     approximate
    D, Destr     destroyed
    dist     distant
    exper     experimental
    Subm, subm     submerged