De acordo com o Código de Vistos de Schengen :
Nationals of the third countries listed in Annex IV shall be required to hold an airport transit visa when passing through the international transit areas of airports situated on the territory of the Member States.
De acordo com a embaixada alemã na Índia , os cidadãos indianos também precisam obter um visto de trânsito para o aeroporto:
All Indian citizens in air transit through Germany need to apply for a transit visa at the Consulate General
Existem várias isenções listadas no Código de Vistos, mas nenhuma delas se aplica especificamente aos marítimos:
(a) holders of a valid uniform visa, national long-stay visa or residence permit issued by a Member State;
(b) third-country nationals holding the valid residence permits listed in Annex V issued by Andorra, Canada, Japan, San Marino or the United States of America guaranteeing the holder’s unconditional readmission;
(c) third-country nationals holding a valid visa for a Member State or for a State party to the Agreement on the European Economic Area of 2 May 1992, Canada, Japan or the United States of America, or when they return from those countries after having used the visa;
(d) family members of citizens of the Union as referred to in Article 1(2)(a);
(e) holders of diplomatic passports;
(f) flight crew members who are nationals of a contracting Party to the Chicago Convention on International Civil Aviation.
A menos que você se enquadre em uma das exceções listadas acima, será necessário solicitar um visto de trânsito.