Dear "DP",
For your information, under Finish flag/owner, strict Finish government rules are applied in regards to Taxes and payment system to seafarers. Owner is obliged to pay full taxes on behalf of Seaman to Finish government, which is 35 % from GROSS salary + Finish Seaman union contributions. And this is both for EU and non EU citizens, as stated in CBA.
Every seaman is automatically registered as official tax payer in Finland, and becomes tax resident after certain years of service, therefore every seaman has rights to use Finish Tax system, including benefits such as pension. Alternatively, every seaman has option to "refund" payed tax, depending on double tax / tax system of the host country of seaman and depending on various rules between countries.
Feel free to drop us an email with all concerns, and we will try to answer your questions, if you are to apply (and suit) for this position/vacancy.