"Sea, River Conditions",, Sea Conditions,Code,Data Limit """Calm ........... 0-1' ""","""CALM""","""SEACON""" """Choppy ......... 1-3' ""","""CHOP""","""" """Moderate ...... 4-12' ""","""MOD""","""" """Heavy ........ 12-20' ""","""HVY""","""" """Very Heavy ... 20-40' ""","""VHVY""","""" """Precipitous .. GT-40' ""","""PREC""","""" """Strong current""","""SCRT""","""" """Freshet/Flooding""","""FRFL""","""" """Flood tide""","""FLTD""","""" """Ebb tide""","""EBBT""","""" """Ice""","""ICE""","""" """Not specified""","""NA""","""" """Unknown""","""UNK""",""""