Article 11 4.

For the purposes of this Title, an activity as an employed or self-employed person normally pursued on board a vessel at sea flying the flag of a Member State shall be deemed to be an activity pursued in the said Member State. However, a person employed on board a vessel flying the flag of a Member State and remunerated for such activity by an undertaking or a person whose registered office or place of business is in another Member State shall be subject to the legislation of the latter Member State if he/she resides in that State. The undertaking or person paying the remuneration shall be considered as the employer for the purposes of the said legislation.