If you are a citizen of a country outside the EU/EEA, you must appear in person at a citizen service centre (in Danish: Borgerservicecenter) in Denmark to obtain a NemID.
If you are employed as a seafarer on a Danish ship, but do not live in Denmark and cannot obtain a NemID, for example because you cannot appear in person at a citizen service centre in Denmark, you will receive the necessary information from the Danish authorities by letter.
For this reason, it is very important that the Danish authorities have your updated contact details so that any letters can reach you on time. If the authorities are unable to contact you, it could mean that you will not receive the social security benefits you are entitled to.
If pension payments (ATP) or other state benefits are owed to you, but you have not heard from the Danish authorities in that respect, it is likely that they do not have the right contact details. In that case, it is important that you request payment of the benefits directly from the relevant authorities.
Therefore, remember to state the correct address details where letters can reach you when you are employed on a Danish ship. Remember also to notify the Danish authorities if you change your address from the one originally stated when you were employed on the Danish ship.