Code Keys
Type Key - Value
DECISION Y - YES
N - NO
U - UNKNOWN
DRYDOCK AND MARINE RAILWAY CODES L - LARGE
M - MEDIUM
S - SMALL
HARBOR SIZE L - LARGE
M - MEDIUM
S - SMALL
V - VERY SMALL
HARBOR TYPE CB - COASTAL BREAKWATER
CN - COASTAL NATURAL
CT - COASTAL TIDE GATE
LC - LAKE OR CANAL
OR - OPEN ROADSTEAD
RB - RIVER BASIN
RN - RIVER NATURAL
RT - RIVER TIDE GATE
TH - TYPHOON HARBOR
HARBOR USE FISH - FISHING
MIL - MILITARY
CARGO - CARGO
FERRY - FERRY
UNK - UNKNOWN
REPAIRS A - MAJOR
B - MODERATE
C - LIMITED
D - EMERGENCY ONLY
N - NONE
SHELTER AFFORDED E - EXCELLENT
F - FAIR
G - GOOD
N - NONE
P - POOR
UNDER KEEL CLEARANCE MANAGEMENT SYSTEM S - STATIC
D - DYNAMIC
N - NONE
U - UNKNOWN