anchor.diff:  UK_1GBWPT,Warrenpoint,United Kingdom of Great Britain,port
   UK_1GBWEY,Weymouth,United Kingdom of Great Britain,port
   UK_1GBWHV,Whitehaven,United Kingdom of Great Britain,port
  +UK_1GB888,United Kingdom - other ports,United Kingdom of Great Britain,port
   NO_0NOBGO,Bergen,Norway,port
   NO_0NOBRG,Borg,Norway,port
   NO_0NOEGD,Eigersund,Norway,port
  
positive.code: BE_0BEZEE,Zeebrugge,Belgium,port
  BG_0BGBOJ,Burgas,Bulgaria,port
  BG_0BGVAR,Varna,Bulgaria,port
  DK_0DKAAL,Aalborg,Denmark,port
  DK_0DKARK,Ærøskøbing,Denmark,port
  DK_0DKAAR,Århus,Denmark,port
  
negative.code: EL_0GRVOL,Volos,Greece,port
  EL_0GRHYD,Ydra,Greece,port
  EL_0GRZTH,Zakynthos,Greece,port
  EL_0GR888,Greece - other ports,Greece,port
  ES_2ESALG,Algeciras,Spain,port
  ES_2ESALC,Alicante,Spain,port
  ES_2ESLEI,Almería,Spain,port
  