bahrgang 83 | Nr. 104 
Mittwoch, den 12.05.2010 
E 
Voraussichtliche Eisentwicklung 
Jer nördliche Ostseeraum liegt im Einflussbereich 
eines Hochdruckgebietes über Nordrussland. Im 
nördlichen Bottnischen Meerbusen werden 
schwache bis mäßige Winde aus östlichen 
Richtungen vorherrschen. In der Bottenvik wird das 
Eis auf See westwärts treiben, sich dabei auflockern 
und weiter abnehmen. Bei deutlich ansteigenden 
Lufttemperaturen wird es zunehmend morsch. 
Expected Ice Development 
The weather in the northern region of the Baltic 
Sea is influenced by a high pressure area over the 
northern Russia. In the northern Gulf of Bothnia 
weak to moderate winds from easterly directions 
will dominate, In the Bay of Bothnia the ice at sea 
will drift towards the west, will loose and decrease 
thereby. Due to significant increase of the air 
temperatures, it will become increasingly rotten. 
Der nächste Eisbericht wird am Freitag, den 
14.5.2010, erscheinen. 
Next ice report will be issued on Friday, 14” May 
2010. 
Im Auftrag 
Dr. Schmelzer 
By order 
Dr. Schmelzer 
Restrictions to Navigation 
Finland 
Sweden 
Harbour/District _|_Atleast dwt/h Ice Class Begin__ 
Tornio, Kemi, Oulu and Raahe | 2000 dwt IA 03.05. 
‚ Kokkola and Pietarsaari 2000 dwt . IA and IB 03.05. 
‘Karlsborg and Luleä | 2000 dwt IA 03.05. 
Haraholmen and Skelleftehamn 2000 dwt IB 03.05. 
Holmsund cancelled _! 12.05. 
Information of the Icebreaker Services 
Finland 
Vessels bound for ports with traffic restrictions in the Gulf of Bothnia shall report to ICE INFO on VHF Channel 
84 when passing the Svenska Björn lighthouse. 
icebreaker: OTSO and SISU assist in the Bay of Bothnia. 
Sweden 
Vessels not suitable for winter navigation, river vessels and tugs with barge can not expect governmental 
cebreaker assistance. 
Vessels bound for ports subject to traffic restrictions in Gulf of Bothnia shall, when passing Svenska Björn 
‘59° 33’N 20° 01’E), report to ICEINFO on VHF channel 84. 
Arrival report is to be made to ICEINFO, on VHF channel 16, when the ship is well moored, including ship’s 
ı1ame, ETD and next port of destination. 
Jeparture report is to be made to ICEINFO, on VHF channel 16, at least 6 hours before departure. 
Icebreaker: YMER assists in the northern and ALE in the southern Bay of Bothnia.