ZCZC XA03 042011 UTC AUG 26 REYKJAVIK VIA GRINDAVIK. 04.08.26 18:00 UTC NAVIGATIONAL WARNING NO. 51 UNDERWATER PIPE INSTALLATION FROM BAKKAFJARA TO VESTMANNAEYJAR WILL START AT TIME 21:00 UTC ON THE 4TH OF AUGUST DURATION 24 HOURS. FROM BAKKAFJARA WEST OF LANDEYJAR THE PIPE IS FLOATING ON THE SURFACE LENGHT OF PIPE IS 1500 METERS STROBE LIGHTS AND FLOATING BOUYS IN THE AREA.THE RESCUE VESSEL THOR/TFIM IS ONSIGHT AND CAN GIVE INFORMATION VIA VHF. ICELANDIC COAST GUARD. NNNN