Statistical Office of the Republic of Slovenia

Environmental Statistics Division / Transport, Tourism and Information society statistics section

Mateja Kos

Transport Statistics
Statistical Office of the Republic of Slovenia
Litostrojska cesta 54
1000 Ljubljana
www.stat.si/StatWeb/en

Maritime transport data refer to gross weight of goods (in tonnes), passenger movements (in number of passengers) as well as for vessel traffic (in number of vessels and in gross tonnage of vessels).

The following classifications are applicable:

Maritime Coastal area: the nomenclature is based on the Geonomenclature (the country nomenclature for the external trade statistics of the Community and statistics of trade between Member States, originally drawn up by the Council Regulation (EEC) N°1736/75) in force in the year to which the data refer (RAMON: https://showvoc.op.europa.eu/#/datasets/ESTAT_Geonomenclature_2021_%28GEONOM_2021%29/data).

Ports: the codes used are the official UN/LOCODEs, when they exist. If a port does not have an official UN/LOCODE a provisional (numeric) code is attributed to the port. As soon as an official UN/LOCODE is attributed by the United Nations Economic Commission for Europe (UNECE) to the port at the request of the competent national authority, the provisional (numeric) code is replaced by the final official one. In exceptional cases (see for example one-port transport or special aggregation for minor ports) permanent numeric codes are attributed to special locations or activities. The code list of UN/LOCODE is available by country through the following link: http://www.unece.org/cefact/locode/service/location.html. According to the relevant directive, Eurostat draws up a list of ports, coded and classified according to countries and maritime coastal areas. The list of ports is included in implementing legal acts and as such is published in the Official Journal of the European Union (the "official" list). The most recent list of ports published in the Official Journal is found in Commission Decision (EU) 2018/1007

Nationality of registration of vessels: the nomenclature used is the Geo-nomenclature (the country nomenclature for the external trade statistics of the Community and statistics of trade between Member States, originally drawn up by the Council Regulation (EEC) N°1736/75) in force in the year to which the data refer (RAMON: https://showvoc.op.europa.eu/#/datasets/ESTAT_Geonomenclature_2021_%28GEONOM_2021%29/data).

The type of ship classification is harmonised with an internationally agreed International Classification of Ship by Type (ICST).

The type of cargo classification, available in Directive 2009/42/EC, has been established in conformity with the United Nation ECE Recommendation N°21.

Environmental statistics division

Main concepts used in this domain are the following and for more information on the concepts and methodology, please consult the Reference Manual on Maritime Transport Statistics.

Port -A place having facilities for merchant ships to moor and to load and/or unload cargo or to disembark and/or embark passengers to or from vessels, usually directly to a pier.
Statistical Port -A statistical port consists of one or more ports, normally controlled by a single port authority, which is able to record ship, passenger and cargo movements.
Reporting Port-A statistical port for which statistics of inward and outward maritime transport flows are compiled.
Main port -A main port is a statistical port which has annual movements of no less than 200 000 passengers or recording more than one millions tonnes of cargo. For ports selected on the basis of only one of these cargo or passenger criteria, detailed statistics are required only for that transport.
Maritime coastal area (MCA) -A maritime coastal area is defined as a contiguous stretch of coastline, together with islands offshore. Within a country, an MCA is defined either in terms of one or more ranges of ports along its coastline, or in terms of the latitude and longitude of one or more sets of extremities of the coastal area. Riverbanks can be included. Normally the coastline of each country is allocated to a single maritime coastal area and the coastlines of more than one country may form a single maritime coastal area. There are some exceptions. For example, the USA is separated into a number of maritime coastal areas to cover its overall coastline. For some countries, two separate stretches of coastline may be counted as one maritime coastal area, as, for example, the Atlantic and Pacific coastlines of Mexico.
Carriage of goods and passengers by sea -The movement of goods and passengers using seagoing vessels, on voyage which are undertaken wholly or partly by sea. The scope of the Maritime Directive 2009/42/EC also includes goods:

1. Shipped to offshore installations;
2. Reclaimed from seabed and unloaded in ports.

Bunkers and stores supplied to vessels shall be excluded from the scope.

Seagoing vessel -Floating marine structure with one or more surface displacement hulls. In the context of the Directive, sea-going vessels are vessels other than those which navigate exclusively in inland waters or in waters within, or closely adjacent to, sheltered waters or areas where port regulations apply.
Nationality of registration of seagoing vessel (Flag state) -Every ship is entered in a registry (i.e. list) of ships. Registries are maintained by many countries, each having a set of rules regarding safety procedures, inspection schedules, manning numbers and nationalities for crew and officers, training requirements, etc. Ship-owners select which registry to use based on the balance between the relative cost implications of the rules of each registry and possible penalties from insurance assessments dependent on these rules.
Type of cargo- The type of cargo classification, set according to the UNECE - Codes for types of cargo, packages and packaging materials, Recommendation 21, Geneva, March 1986, describes how the goods are being transported in terms of the vessels being used and the port facilities required to handle them. It is therefore very different from the categories of goods classification.
Freight container-Special box to carry freight, strengthened and stackable and allowing horizontal or vertical transfers.

Swap bodies are excluded. Although without internal volume flats used in maritime transport should be considered to be a special type of container and therefore are included here. For a fuller description, reference should be made to ISO 668 and 1496.The related term "container cargo" refers to containers, with or without cargo, which are lifted on or off the vessels which carry them by sea.

Ro-Ro unit- This means wheeled equipment for carrying cargo, such as a truck, trailer or semi-trailer, which can be driven or towed onto a vessel. Port or ships' trailers are included in this definition. Classifications should follow United Nations ECE Recommendation No 21 'Codes for types of cargo, packages and packaging materials'. Live animals on the hoof are included. Vehicles being transported as cargo as opposed to a means of transport for freight are recorded in the separate headings of the Ro-Ro cargo classification, when they are rolled on or rolled off a vessel on their own wheels.
Ro-Ro cargo -This means goods, whether or not in containers, on Ro-Ro units, and Ro-Ro units, which are rolled on and off the vessels, which carry them by sea.
Gross weight of goods -The gross weight of each consignment is the weight of the actual goods together with the immediate packaging in which they are being transported from origin to destination, but excluding the tare weight of containers or Ro-Ro units (e.g. containers, swap bodies and pallets containing goods as well as road goods vehicles, wagons or barges carried on the vessel). This measure of quantity is different from that used in trade statistics, namely the net weight of goods and different from statistics collected on other transport modes where the tare weight is included. Where goods are transported in a road goods vehicle, in a container, or other intermodal transport unit, the gross weight of the goods does not include the tare weightof the transport unit.
Gross tonnage -This means the measure of the overall size of a ship determined in accordance with the provisions of the International Convention on Tonnage Measurement of Ships, 1969.
Passenger Any person who makes a sea journey on a merchant ship. Service staff assigned to merchant ships is not regarded as passengers. Non-fare paying crewmembers travelling but not assigned and infants in arms are excluded.
Cruise passenger -This means a sea passenger making a sea journey on a cruise ship. Passengers on day excursions are excluded.
Cruise ship -This means a passenger ship intended to provide passengers with a full tourist experience. All passengers have cabins. Facilities for entertainment aboard are included. Ships operating normal ferry services are excluded, even if some passengers treat the service as a cruise. In addition, cargo-carrying vessels able to carry a very limited number of passengers with their own cabins are also excluded. Ships intended solely for day excursions are also excluded.
Cruise passenger excursion -This means a short visit by a cruise passenger to a tourist attraction associated with a port while retaining a cabin on board.

The data used in the domain are collected at port level.

Detailed data are provided for ports handling more than one million tonnes of goods or recording more than 200 000 passenger movements annually (Main ports). The other ports are required to provide summary data. However, detailed data may be included also for minor ports on a voluntary basis.

Ports of Slovenia

All data sets have been provided according to the legal act (with no derogations) starting from 2009 reference year.

Not applicable.

The units used depend on the variables collected within each data set and are: gross weight of goods expressed in thousands of tonnes; number of passengers in thousands, number of vessels.

TEUs: Twenty feet equivalent units, expressed in units or in thousands depending on the table. TEU calculation coefficients:
• 20-ft freight units (1 TEU)
• 40-ft freight units (2 TEU)
• Freight units over 20-ft and under 40-ft in length (1.5 TEU)
• Freight units over 40-ft long (2.25 TEU).

Quarters for datasets A1, A2, C1, C2, D1, F1 and F2.
Whole calendar years for datasets A3, B1 and E1.

National Level:

•  Annual Programe of Statistical Surveys

European Level:

• The statistics on maritime transport are collected within the framework of within Directive 2009/42/EC and Commission Decision 2008/861/EC, as amended by Commission Decision 2010/216/EU of the European Parliament and of the Council of 14 April 2010, by Regulation 1090/2010 of the European Parliament and of the Council of 24 November 2010 and by Commission Delegated Decision 2012/186/EU of 3 February 2012.
• The dissemination is based on the terms of Commission Decision 2001/423/EC on arrangements for publication or dissemination of the statistical data collected pursuant to Council Directive 95/64/EC on statistical returns in respect of carriage of goods and passengers by sea.

Not applicable.

National level:

• National Statistics Act – ZDSta (Official Gazette of the Republic of Slovenia [Uradni list RS], No. 45/95 of 4 August 1995); (Zakon o državni statistiki (Uradni list RS, št. 45/95))

European level:

• (recital 24 and Article 20(4)) of 11 March 2009 (OJ L 87, p. 164), stipulates the need to establish common principles and guidelines ensuring the confidentiality of data used for the production of European statistics and the access to those confidential data with due account for technical developments and the requirements of users in a democratic society.

Article 4 of Commission Decision 2001/423/EC mention that: "the highest level of detail in which data may be published or disseminated is the level of port to and from maritime coastal area. The Commission may however publish at more aggregate level if the quality and/or completeness of information are not appropriate in such detail."

Monthly: SiStat database

Quarterly: Eurostat

https://www.stat.si/StatWeb/en/releasecal

Every month after the 15th of the month.

Main results of statistics are available free of charge to all users.

Quarterly maritime transport statistics are published within 10 months after the reference period and annual maritime transport statistics within 16 months after the reference period.

Around the 15th of the month in First release for Transport.

Statbook - Annually

SiStat database - monthly an annually

SiStat database

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https://www.stat.si/StatWeb/File/DocSysFile/8022/22-194-ME.pdf

https://www.stat.si/StatWeb/en/Methods/QuestionnairesMethodologicalExplanationsQualityReports

The system follows as far as possible the European Statistics Code of practice and Quality Assurance Framework of the European Statistical  System, more precisely Principle 4: Commitment to Quality:

Quality policy is defined and made available to the public. An organisational structure and tools are in place to deal with quality management. There are procedures in place to plan, monitor and improve the quality of the statistical processes. Procedures based on quality reporting are in place to internally monitor product quality. Results are analysed regularly and improving actions are undertaken, if needed (for example after obtaining annual summary results and mirror checks reports from Eurostat). There is a regular and thorough review of the key statistical outputs using also external experts where appropriate.

Moreover, in the framework of Statistical Office of the republic of Slovenia quality approach, Statistical Office has introduced standard quality reports (standard-documentation) to be produced and kept up-to-date for all statistics. The reports are based on the ESS definition of quality in statistics and follow the European standard quality report and provide users with information about the underlying concepts, definitions, methods used and the quality of the statistics (meta-information) in a standardised format.

Data quality can be assessed as high. There is a set of validation rules and quality checks put in place, which detect various types of issues. In case of any issues detected, the data providers are contacted to provide explanations or/and revise the data accordingly. Mirror checks and checks for the consistency over times are prepared and revised as well and the results are compared with the data published by the airport at their website.
Annually, Eurostat provides a data quality report with a summary of the main findings affecting quality as well as showing the solution adopted and the materiality of the existing differences. Mirror checks and checks for the consistency over times are prepared as well.

Timeliness and punctuality are very good.

Communication between the Office and users of statistical results takes place by telephone and e-mail. Communication between the Office and data providers and data users also takes place on a regular basis within the Council for Transport Statistics; the meetings of this panel shall be convened for a year and a half to two years.

SURS measured general user satisfaction for the last time in 2018. Respondents assessed general satisfaction with SURS with the average score of 7.5 (on a scale from 1 – disagree completely to 10 – agree completely).

Completeness of statistical results is the ratio between the number of statistical results that were disseminated (within a specific field) and the number of statistical results that were demanded (e.g. with regulations, in agreements). Statistical results that are not appropriate for a Member State or derogation is in force for them are not taken into account in the calculation.

Completeness of statistical results is 100 %.

Accuracy is defined as the degree to which the value at the end of statistical processing matches the true but unknown population value.

Not applicable for maritime transport data collection.

The unit non-response rate is the proportion of eligible units for which we were not able to obtain any desired data or the obtained data were not useful. Unweighted and weighted values of the indicator can be calculated.

Quarterly data should be transmitted by Member States to Eurostat within five months of the end of the period of observation; annual data within eight months. The Commission (Eurostat) shall disseminate appropriate statistical data with a periodicity comparable to that of the results transmitted (Directive 2009/42/EC).

Punctuality of the first release measures the time lag between the announced and actual date of the first release.

The survey on maritime transport has been adapted to EU requirements since 2003, so that the data are fully comparable with the data of the members of the European Statistical System.

Before 2009, the data were collected with two paper questionnaires: Registration of the ship arrival to the port (TR-PRI-P/M) and Registration of the ship departure from the port (TR-PRI-O/M). The administrative source of the data was the same, the Slovenian Maritime Administration. In 2010, in the category “type of cargo” code 63 (Road wagons, shipborne portto-port trailers and shipborne barges engaged in goods transport) was replaced by three new codes: 64 (Rail wagons engaged in goods transport), 65 (Shipborne port-to-port trailers engaged in goods transport) and 66 (Shipborne barges engaged in goods transport).

There were no breaks in time series, so all time points are comparable.

The data are consistent.

As from 2009 all datasets collected and provided to Eurostat are consistent.

Burden of interviewed persons and business entities is not a separate quality component but an important factor in assessing the quality, since it usually has an impact on all other quality components.

As this survey is an administrative resource, it does not burden the reporting units.

Monthly port traffic data are provisional for the current year. With each monthly release the data can be corrected and supplemented with new data. With annual release in July the data become final. Publishing of provisional and final data is planned. Due to the needs of users for timely information, provisional data are published that meet the criteria of the quality of official statistical data but do not meet the quality that can be met with complete coverage. Data are revised when recent, more complete and better data can significantly contribute to the quality of data-based decision-making.

Coherence between provisional and final data shows absolute or relative difference between the disseminated value at first release and the value at the release of final data. Revisions are only corrections that are part of the regular procedure of publishing statistical results. Corrections due to errors are not revisions and are not taken into account in calculating the indicator. Even though the revision policy stipulates several versions of (provisional) data for the same reference period, for the sake of simplicity only the difference between the values of provisional data in the first release and the values in the final data release is calculated.

Administrative data sorce of SMA (Slovenian Maritime Administration)

Monthly

SiStat database

Annual release July 22nd.

Slovenian Maritime Administration (SMA)

Not applicable for maritime transport data collection.

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