The dataset was created in order to update the information regarding underwater cables in the Baltic Sea Region for the HELCOM Assessments. Data was collected by the HELCOM Secretariat during 2015 and 2016. The dataset contains information on submarine cables in the Baltic Sea. The dataset is based on available public sources on cables and due to variety of data sources (national and international), should be taken as general data based on best available public data with variable resolution over the different region in the Baltic. For Danish areas, the data represents constructions on Danish territorial waters, authorized facilities and activities from 2015. Depending on area, more accurate spatial data might exist, but data is unavailable for public use. National data submissions from Latvia and Russia were not available. For 2018 version of dataset, cables that have only approximate location were removed from the dataset, as the spatial accuracy of these objects is not sufficient for the scale of the index. Attribute specification and units NAME COUNTRY CAPACITY (MW) STATUS (Operational, Under Construction, Application Submitted, Planned, Unknown) SOURCE

The dataset contains cables in the marine environment that was made available by HELCOM Contracting Parties in response to a data call. Data were collected by the HELCOM Secretariat in 2022. Data were reported in polylines (Estonia, Finland, Poland, Denmark and Germany) and polygons (Poland). For Estonia and Sweden, HOLAS3 dataset was supplemented with HOLAS2 data. Attribute specification and units with predefined values specified from the data call Status: The status of the cable harmonized with the values from a predefined list (operational, under construction, application submitted, planned, approved, other), and following a precautionary approach that attributed the value operational for values that were out of the predefined list Type: Cable type (telecommunication, power, other) Capacity: Potential capacity of the cable or amount of data Unit: Capacity unit (kV or GB) Year: Year the cable was built Cab_prot: Specify the type of cable protection (none, sediment fill, rock fill, other) Sediment: Sediment type (mud, sand, hard, substrate, mixed sand, other) Cab_posit: Cable position in the seabed (in the sediment, on the sediment) Lay_depth: Laying depth in meters Refiling: Refilling of the trench (YES, NO) Method: The method utilized when laying the cable (digging/dredging device [open, enclosed], suction device, flushing, other) Cab_width: Widht of the cable Notes: Notes regarding the reported data and HOLAS 2 data indication. orig_stats: Original status declared by the Contracting Parties

Dataset contains the aircrafts in the Baltic Sea area capable of oil spill surveillance. Dataset contains the aircrafts in the Baltic Sea area capable of oil spill surveillance. The locations of the aircrafts are symbolic, representing only the home country of the aircraft. See also the use restrictions -section. ATTRIBUTES: - AIRCRAFT : type name of the aircraft - TYPE : type of aircraft (airplane, helicopter) - SPEED_KN : speed in knots - ENDURANC : flight time (hours) - HOURS_YE : surveillance flight hours per year - RS_EQUIP : surveillance equipment For information about HELCOM's air surveillance activities, see: http://www.helcom.fi/shipping/waste/en_GB/surveilance.

Dataset contains the vessels in the Baltic Sea area capable of fire fighting (over 5000 liters/min). The locations of the ships are approximate, derived from the homeport of the vessel. Dataset contains the vessels in the Baltic Sea area capable of fire fighting (over 5000 liters/min). The locations of the ships are approximate, derived from the homeport of the vessel. See also the use restrictions -section. ATTRIBUTES: - X : longitude of the location (at homeport, in WGS 84) - Y : latitude of the location (at homeport, in WGS 84) - FIRECAPACI : fire fighting capacity of the vessel (l/min) - READINES : readiness (hours) - ROUGHSEA : rough sea capabilities - SOURCE : possible source of the information - NOTICE : additional information. For more information about HELCOM's response activities, see: http://www.helcom.fi/groups/response/en_GB/main.

Total (monthly, and 5 year average) discharge from hydropower dams (m3/s). Data includes the water that passes the turbines as well as the water not passing the turbines. The data was made available by HELCOM Contracting Parties in response to data request. The data was received from Estonia, Finland and Sweden. The activity was declared as not relevant in Denmark, Germany, Latvia, Lithuania and Poland. Data contains only those hydropower dams that are situated closest to the Baltic coast (less than 40 km), are the first ones from the coast in the river network and have a direct connection to the Baltic Sea trough river. Swedish data is a combination of actual measurements and modelling. Modelled data have been calculated with s-hype2012_version_3_0_0. These data are also presented online at http://vattenwebb.smhi.se/regulations/. Please note that data from 2015 is provisional and may be subject to revisions. Attribute specification and units: X_Long: X (East) coordinate point Y_Lat: Y (North) coordinate point Country: Country (EE=Estonia, FI=Finland, SE=Sweden) ID: Name or ID number of the hydropower dam AVG_year: A calculated yearly average discharge (m3/s) (2011-2015) jan_2011 – dec_2015 : Monthly discharge (m3/s)

Dataset contains the response vessels in the Baltic Sea area capable of providing international assistance in an oil spill situation. The locations of the ships are approximate, derived from the homeport of the vessel. See also the use restrictions -section. The dataset was updated in 9/2016 by the HELCOM Secretariat. ATTRIBUTES: -VESSEL: Name of response vessel - LOCATION: announced homeport - REC_SYST: oil recovery system used - REC_RATE: rate of oil recovery (m3/hour) - STORAGE: oil storage capacity of the ship (m3) - TOWING: towing capability of the ship - FIREFIGHT: fire fighting capability of the ship - LIGHTERING: lightering capability of the ship - BOOMTYPE: type of booms on board - BOOMLENG: length of the booms (m) - NOTICE: additional information - IMAGE: reference to a possible image file of the vessel

This dataset consists of information and status of the main pollution sources within the Baltic Sea catchment area (the Pollution Hot Spots). The HELCOM pollution Hot Spots were idenitified in 1992 by the HELCOM Joint Comprehensive Action Programme (more information is available on www.helcom.fi). The current status of active and cleaned hot spots is available https://helcom.fi/action-areas/industrial-municipal-releases/helcom-hot-spots/.

Dataset contains the vessels in the Baltic Sea area with towing capacity in an emergency situation (over 25 tons of bollard pull). The locations of the ships are approximate, derived from the homeport of the vessel. Dataset contains the vessels in the Baltic Sea area with towing capacity in an emergency situation (over 25 tons of bollard pull). The locations of the ships are approximate, derived from the homeport of the vessel. See also the use restrictions -section. ATTRIBUTES: - X : longitude of the location (at homeport, in WGS 84) - Y : latitude of the location (at homeport, in WGS 84) - BOLLARDP : towing capacity of the vessel (tons of bollardpull) - READINES : readiness (hours) - ROUGHSEA : rough sea capabilities - SOURCE : possible source of the information - NOTICE : additional information For more information about HELCOM's response activities, see: http://www.helcom.fi/groups/response/en_GB/main.

Dataset contains the vessels in the Baltic Sea area with capacity (over 200 m^3) to store recovered oil in an accident situation. Dataset contains the vessels in the Baltic Sea area with capacity (over 200 m^3) to store recovered oil in an accident situation. The locations of the ships are approximate, derived from the homeport of the vessel. See also the use restrictions -section. ATTRIBUTES: - X : longitude of the location (at homeport, in WGS 84) - Y : latitude of the location (at homeport, in WGS 84) - STORAGE : storage capacity of the vessel (m^3) - READINES : readiness (hours) - ROUGHSEA : rough sea capabilities - SOURCE : possible source of the information - NOTICE : additional information. For more information about HELCOM's response activities, see: http://www.helcom.fi/groups/response/en_GB/main.