ZCZC RA12 122309 UTC APR 26 REYKJAVIK VIA SAUDANES NAVIGATIONAL WARNING NO.27 LANGANES LIGHTHOUSE IN ARNARFJORDUR INT NO. L4568 IN POS 65-43.18N 023-31.96W HAS CHANGED ANGLE OF VISIBILITY AND WILL BE TURNED ON TODAY WITH THE NEW ANGLE. NEW ANGLE OF VISIBILITY: LAND-G-115-W-120-R-LAND MARINERS ARE ASKED TO SHOW CAUTION BECAUSE OF THE CHANGE. ICELANDIC COAST GUARD NNNN