Code Keys - Explanation of the terms used

Country:   YemenLatitude: 12° 47' N
Geographic Region:   YEMEN ADEN Longitude:44° 57' E

Publication172  Tugs Salvage   Lifts 
Chart62098  Tugs AssistY          200 Tons Plus
Harbor SizeM  Quarantine           50-200 Tons
Harbor TypeCN         Pratique          25-49 Tons 
Shelter AffordedG         Deratt Cert          0-24 Tons 
Entrance Restrictions          Other   Services 
       Tide Y  Communications           LongshoreY
       Swell N         TelephoneY          ElectricalY
       Ice N         TelegraphY          Steam
       Other          Radio Y          Navig EquipY
Overhead Limits         Radio Tel Y          Elect RepairY
Channel DepthJ         AirY   Supplies 
Anchorage DepthJ         Rail          Provisions Y
Cargo Pier DepthN  Load/Offload           Water Y
Oil Terminal DepthH         Wharves           Fuel Oil Y
Tide4         AnchorY          Diesel Oil Y
Maximum Size VesselL         Med Moor          Deck
Good Holding Ground         Beach Moor          Engine
Turning AreaY         Ice Moor   RepairC
First Port of EntryY  Medical FacilitiesY   DrydockS
U.S. RepresentativeN  Garbage Disposal   RailwayS
ETA MessageY  Degauss     
Pilotage   Dirty BallastY     
       Compulsory   Cranes      
       Available          Fixed     
       Local Assist         Mobile     
       AdvisableY         FloatingY