Ships of 24 meters in length and above
These vessels must be measured in accordance with the International Convention on Tonnage Measurement of Ships (1969). When determining whether the ship is above or below 24 meters, the “Length (1969 Convention)” shall be used.
Such ships must be provided with an International Tonnage Certificate.
Tonnages shall be stated without decimals and without units (always GT only).
Dimensions shall be stated with two decimals and in meters.
Ships built before 18 July 1994, and which have not been rebuilt or remeasured at the owner’s request, may have a BRT listed on the reverse side. This BRT remains the regulatory reference unless otherwise explicitly stated.
Ships (except fishing vessels) with a length below 24 meters
These vessels are measured in accordance with Order No. 845 of 1998 on the measurement of small vessels.
Such ships must be provided with a National Tonnage Certificate.
Tonnages shall be stated with one decimal and without units.
Dimensions shall be stated with two decimals and in meters.
Ships measured under previously applicable rules, and which have not been rebuilt or remeasured at the owner’s request, may retain existing measurements on their tonnage certificates.
Fishing vessels (non-Greenlandic) with a length below 24 metres
These are measured in accordance with Order No. 846 of 1998 on the measurement of small fishing vessels (EU).
Such vessels must be provided with a National Tonnage Certificate.
Tonnages shall be stated with one decimal and without units (always GT only).
Dimensions shall be stated with two decimals and in meters.
Ships built before 1 January 1999, and which have not been rebuilt or remeasured at the owner’s request, may have a BRT listed on the reverse side. This GRT is used for determining the vessel’s inspection status unless otherwise explicitly stated.
Greenlandic fishing vessels with a length below 24 metres
These vessels are still measured in accordance with Order No. 620 of 1992 on the measurement of small vessels (non-EU). Note that this order remains in force for Greenland by Royal Decree, despite its repeal elsewhere.
Such vessels must be provided with a National Tonnage Certificate.
Tonnages shall be stated stated with one decimal and without units.
Dimensions shall be stated with two decimals and in metres.
Ships measured under previously applicable rules, and which have not been rebuilt or remeasured at the owner’s request, may retain existing measurements on their tonnage certificates.
Recreational crafts
Recreational crafts are measured in the same manner as commercial vessels of the same size
Tonnage certificates
Tonnage certificates issued by authorities other than the Danish Maritime Authority must not bear the national coat of arms, but rather the issuer’s own logo.
The issuing party must be authorised by the Danish Maritime Authority (classification societies are authorised under the “class agreement”). A list of authorised entities and templates for tonnage certificates can be found on the Danish Maritime Authority’s website.
If the vessel has been measured as an open vessel, this must be indicated on the reverse side of the tonnage certificate (for ships under 24 metres).
Older tonnage measurements that can be used to determine inspection requirements shall be indicated on the reverse side of the tonnage certificate.
Information that may assist in identifying the vessel shall likewise be included on the reverse side of the certificate.
Definitions
- Length (LOA): The straight-line distance between the foremost point of the stem and the aftermost point of the stern.
- Length (L1) (Order on measurement of small vessels): The length measured from the intersection of the plating with the upper side of the deck at the stem to the intersection of the plating at the stern.
- Length (1969 Convention): 96% of the total length measured on a waterline at 85% of the least moulded depth above the top of the keel, or the length from the fore side of the stem to the centre of the rudder stock on that waterline, whichever is greater.
- Breadth (B): The maximum breadth of the ship, measured outside the plating at or below the upper side of the deck.
Dimension number
- Dimension number = LOA × B (for fishing vessels).
- Dimension number = L1 × B (for other commercial vessels).
The dimension number is stated only on tonnage certificates for ships under 24 metres and with two decimals.