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Title: European Maritime Single Window environment (EMSWe)
Sectors of Transport: Transport, Maritime & inland waterways
European Maritime Single Window environment (EMSWe)

European Maritime Single Window environment (EMSWe)



Regulation (EU) 2019/1239 establishing a European Maritime Single Window environment


  • It introduces an interoperable European Maritime Single Window environment (EMSWe) with harmonised interfaces*, to simplify reporting obligations* for ships arriving at, staying in and departing from EU ports.
  • It aims to improve the European maritime transport sector’s competitiveness and efficiency by reducing administrative burden, introducing a simplified digital information system to harmonise the existing national systems and reduce the need for paperwork.


The EMSWe is the legal and technical framework for the electronic transmission of information about reporting obligations for ships calling at EU ports. It is a network of maritime national single windows* with harmonised reporting interfaces and includes data exchanges using SafeSeaNet and other systems, as well as services for:

  • user registry and access management;
  • common addressing service;
  • EMSWe ship database;
  • common location database;
  • common hazardous material (‘hazmat’) database; and
  • ship sanitation database.

Establishing the common EMSWe data set

The regulation maintains the existing maritime national single window in each EU country as the basis for a technologically neutral and interoperable EMSWe.

The European Commission is empowered to adopt delegated acts to establish a new common EMSWe data set, incorporating and adapting the most relevant requirements in existing national or EU legislation. EU countries must notify the Commission of any reporting obligations and requirements stemming from national legislation and any data elements they wish to be included in the EMSWe data set.

Harmonised reporting Interfaces

The Commission will adopt implementing acts laying down the functional and technical specifications for the harmonised reporting interface module for the maritime national single windows, aiming for them to be interoperable with different user technologies and reporting systems.

Once-only principle

The Convention on Facilitation of International Maritime Traffic (FAL Convention) provides that public authorities must in all cases require only essential reporting information and keep the number of items to a minimum. Under the regulation, EU countries must ensure that ship operators are asked to provide any required information only once per port call, and that relevant supplied data are retained for reuse.

Common services

As components of the EMSW environment, the Commission establishes:

  • a common access-management and user registry system for declarants and for dataservice providers and national authorities that use the maritime national single window in cases where authentication is required;
  • an additional and optional common addressing service, provided that the harmonised reporting interface module has been fully implemented;
  • a ship database containing a list of vessel identification information and characteristics as well as records on ship reporting exemptions;
  • a common location database containing a reference list of location codes and port facility codes listed in the International Maritime Organization’s Global Integrated Shipping Information System (GISIS) database;
  • a common hazmat database containing a list of dangerous and polluting goods that must be notified;
  • a common ship sanitation database that is able to receive and store data on maritime declarations of health. This does not include personal data relating to sick passengers or crew;
  • a multiannual implementation plan, revised annually.

Each EU country designates a competent national authority with a legal mandate to act as a national coordinator for the EMSWe.

The regulation does not affect the exchange of information between customs authorities, or between customs authorities and businesses, using the electronic data-processing techniques referred to in Regulation (EU) No 952/2013 (see summary).


Regulation (EU) 2019/1239 repeals Directive 2010/65/EU (see summary) as of 15 August 2025.


It applies from 15 August 2025.


For more information, see:


Harmonised reporting interface module: a middleware (software) component of the maritime national single window through which information can be exchanged between the information system used by the declarant and the relevant maritime national single window.
Reporting obligation: the information required by the EU, international and national legislation and requirements (referred to in the Annex) which has to be provided in connection with a port call.
Maritime national single window: a nationally established and operated technical platform for receiving, exchanging and forwarding electronically information to fulfil reporting obligations, including management of access rights, a harmonised reporting interface module and a graphical user interface (GUI), as well as links with the relevant authorities’ systems and databases at national and at EU level.


Regulation (EU) 2019/1239 of the European Parliament and of the Council of 20 June 2019 establishing a European Maritime Single Window environment and repealing Directive 2010/65/EU (OJ L 198, 25.7.2019, pp. 64-87)


Regulation (EU) No 910/2014 of the European Parliament and of the Council of 23 July 2014 on electronic identification and trust services for electronic transactions in the internal market and repealing Directive 1999/93/EC (OJ L 257, 28.8.2014, pp. 73-114)

Regulation (EU) No 952/2013 of the European Parliament and of the Council of 9 October 2013 laying down the Union Customs Code (recast) (OJ L 269, 10.10.2013, pp. 1-101)

Successive amendments to Regulation (EU) No 952/2013 have been incorporated into the original text. This consolidated version is of documentary value only.

Directive 2010/65/EU of the European Parliament and of the Council of 20 October 2010 on reporting formalities for ships arriving in and/or departing from ports of the Member States and repealing Directive 2002/6/EC (OJ L 283, 29.10.2010, pp. 1-10)

See consolidated version.

last update 12.01.2020

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