Europese Radio Amateurs Organisatie

Were you in the Royal Navy, Marines, Merchant Navy, Fishery Fleets, Marine-cadets or have been employed in Maritime shore-based service?

The Belgian Maritime Amateur Radio Society whose call-sign is ON4BRN.

OR0OST is associated with BMARS. The address of both stations is
industriezone 't Walletje 50 in Knokke.