A large opening through the deck and bottom of drill ships, diving support vessels or well intervention vessels, allowing to lower tools and instruments into the sea.

Workstation from where equipment and environment can be checked constantly.

A system designed to supervise the operational status of machinery or systems by means of instruments which provide displays of parameters and alarms indicating abnormal operating conditions.

Act of checking equipment and surroundings constantly in order to detect changes.

The moment which will try to return a ship to upright position when she is inclined.

The product of the mass and the square of its perpendicular distance from the axis considered, which is summed for all the elements in the body considered.

The attempt of a force to turn a body. It is usually measured by the product of the force and the length of lever.

Designed by Delta Marine, of Istanbul, the 11,000dwt combined molten suplhur and bitumen tanker is one of only very few vessels of this type in service worldwide.

Fruit and vegetables can be transported in a nitrogen reach atmosphere in order to slow down the ripening process.

The most comprehensive assessment of power requirements for a new ship is obtained by conducting experiments with a model hull and propeller in a towing tank.

Towing tanks, manoeuvring and seakeeping basins used to carry out experiments with models.

Mobile Offshore Units – Self-elevating or column-stabilized units, not fitted with drilling equipment, production facilities, hydrocarbon storage, or any other system onboard handling hydrocarbons.

If geological predictions based on seismic surveys show that a particular offshore area offer promising prospects for finding oil, a well is drilled to examine these predictions.

A steel box (mobile mini drydock) provided with an access hatch and used as an external enclosure to carry out dry work to be done underwater.

There are several types of man overboard retrieval equipment like ladders, scrambling nets, A-frames, Jason’s cradle, hydraulically operated platforms, etc.

Million standard cubic feet per day is a unit of measurement mainly used in the USA. Mainly used as a measure for natural gas. One MMSCFD equals 1180 m3/h.

One million British Thermal Units. BTU is a traditional unit of energy equal to 1055.06 joules. It is the amount of energy needed to cool or heat one pound of water one degree Fahrenheit.

A system to stow 20-feet containers into 40-feet cell guides. Starting from tank top you can stow from 1 to 4 tiers 20-feet containers (only secured by single stacking cones) and top them up with at least one 40-feet container.

A device aimed primarily at improving propulsive performance. It consists of fixed-type steel fins at the rear of the propeller which are fitted onto the forward side of the rudder horn.

The distance between the axes of two shafts to be coupled together.