Use constraints: Data can be used freely given that the source is cited (following creative commons license CC-BY). The source should be cited as: “HELCOM HOLAS II Dataset: Polluting ship accidents (2017)”.

Years 2011-2013 were extracted from reported shipping accidents with oil spills (Parameter Pollution=Yes).

The data has been approved HELCOM MARITIME group.

Country

Year

Date__dd_m = Date (dd.mm.yyyy)

Time__hh_m = Time (hh:mm)

Latitude__ = Latitude (decimal degrees)

Longitude = Longitude (decimal degrees)

Ship_1_nam = Ship 1 name, flag

Shiptype1 = Ship 1 type (according to AIS category)

Ship_type = Details of ship 1 type

Hull_type = Hull type (ship 1)

Size__gt_ = Size (gt) (ship 1)

Size__dwt_ = Size (dwt) (ship 1)

Draught__m = Draught (m) (ship 1)

Ship_2_nam = Ship 2 name, flag

Shiptype_2 = Shiptype 2 (according to AIS category)

Ship_typ_1 = Details of ship 2 type

Hull_typ_1 = Hull type (ship 2)

Size__gt1 = Size (gt) (ship 2)

Size__dwt1 = Size (dwt) (ship 2)

Draught__1 = Draught (m) (ship 2)

Type_of_ca = Type of cargo

Type_of_ac = Type of accident

Type_of_co = Type of collision

Further_de = Further details about accident

Cause_of_a = Cause of accident (ship1)

Cause_of_1 = Cause of accident (Ship 2)

Accident_i = Accident in ice conditions

Crew_train = Crew trained in ice navigation

Aggravatin = Aggravating circumstances

Pilot_pres = Pilot presence (ship 1)

Pilot_pr_1 = Pilot presence (ship 2)

Offence_ag = Offence against Rule

Damage = Damage

Need_of_as = Need of assistance

Pollution = Pollution (Yes/No)

Amount_of = Amount of pollution (tonnes)

Amount_pol = Amount of pollution (m3)

Type_of_po = Type of pollution

Consequenc = Consequences/Response actions

Additional = Additional information