Contact information

Do you have questions regarding our activities, membership or naval voluntary defence in general?

You may contact us via email at or reach out to the chairman, secretary or any of the board members. We will be happy to provide you with additional information.

Postal address

Sininen Reservi ry
c/o Petri Käyhkö
Grannarsintie 48
Business ID 3050909-4


Petri Käyhkö
Master Chief Petty Officer
+358 50 366 2024


Lasse Mäki
Lieutenant, Junior Grade
+358 40 738 5878


We are primarily accepting electronic invoices to the address below. If electronic invoices cannot be delivered, an alternative way is to send the invoice as an email attachment at or directly to the contact person of the order.

Electronic invoicing address 003730509094
Invoice operator
003708599126 (OpenText)


Board members elected in the annual meeting on 23/04/2022:

Petri Käyhkö (chairman)
Markus Aarnio
Juha Dahlbo
Jarmo Holm (1st vice chairman)
Hannu Hyttinen
Seppo Kaila
Rami Klén
Harri Koponen
Markus Liesalho (2nd vice chairman)
Lasse Mäki (secretary)
Matti Puhakka
Markku Saarikannas
Jukka Soini
Eero Vaitiniemi
Tii Vieruaho

More information, including the committees and responsibles, is provided on the page Yhteystiedot in Finnish.