Welcome to RightShip. Please select your preferred language:

Set language



American Bureau of Shipping

American Ship Classification Society

More information:


Australian Maritime Safety Authority

Australian government agency with the charter of enhancing efficiency in the delivery of safety and other services to the Australian maritime industry.

More information:


Bureau Veritas

French Ship Classification Society that assesses ships for conformity with specific sets of rules.

More information:


Ballast Water Management System

A BWMS aims to prevent ballast water discharges by ships negatively impacting the marine environment.

More information:


Condition Assessment Program

An independent evaluation of the condition of a ship.

More information:

CBM Gas Capacity

Coal Bed Methane Gas Capacity

Coal bed methane gas capacity is displayed in cubic metres in SVIS™


Det Norsk Veritas ▪ Germanischer Lloyd

A classification society. They offer certification and assessment and training services to assure the performance of customers' products, processes and organisations.

More information:


Document of Compliance

A form of certificate issued to a company which operates a functional safety management system complying and satisfying with the requirements of the International Safety Management Code certification process.


Designated Person Ashore

Serves as the link between the ships and shore staff and to verify the Safety Management System (SMS) implementation.



It's the difference in tonnes between the displacement of a ship in water of relative density of 1,025 kg/m³ at summer load draught and the lightweight of the ship. The summer load draught should be taken as the maximum summer draught as certified in the stability booklet approved by the Administration or an organisation recognised by it.


Energy Efficiency Design Index.

Measures the carbon dioxide emitted (grams of carbon dioxide per tonne nautical mile) for new ships, calculated from ship design and engine performance data.

More information:


Energy Efficiency Operational Indicator

Enables operators to measure the fuel efficiency of a ship in operation and to gauge the effect of any changes in operation, eg. improved voyage planning or more frequent propeller cleaning, or introduction of technical measures such as waste heat recovery systems or a new propeller.

More information:


European Maritime Safety Agency

The European Maritime Safety Agency is one of the EU's decentralised agencies. Based in Lisbon, the Agency provides technical assistance and support to the European Commission and Member States in the development and implementation of EU legislation on maritime safety, ship pollution and maritime security. It has also been given operational tasks in the field of oil pollution response, vessel monitoring and in long range identification and tracking of vessels.

More information:


Existing Vessel Design Index

Similar to the IMO MEPC’s EEDI, RightShip’s EVDI measures a ship’s theoretical CO2 emissions per tonne nautical mile travelled. However, unlike the EEDI that is applied only to new ships the EVDI is designed for application to existing vessels.

For more information visit our GHG Rating Page

EVDI™ Size Score

Existing Vessel Design Index Size Score

The EVDI Size Score indicates the number of standard deviations a vessel varies from the average for similar sized vessels of the same ship type and is used to determine the GHG Emissions Rating Size Group.

More information: