Sea Trials

After all the systems are erected on the ship and when the ship is ready for delivery to owners, sea trials are to be carried out for the vessel. To test all systems at their full capacity and to confirm that the performance of the vessel meets the requirements specified in the technical specification signed with owners... Continue Reading →

Tonnage & Displacement

Tonnage refers to the volume and there are a few types of tonnage that you will come across frequently. GROSS TONNAGE Gross Tonnage is indicative of the total volume of the of a ship and may be often used in reference to the size of the ship.   NET TONNAGE Net tonnage is indicative of the of the... Continue Reading →

Tests & Trials

1)  Tests and trials are carried out on board ships, during production process with following objectives.  The equipment provided are tested to confirm that their capacities are meeting specification requirements and class requirements. The quality of work meets the required standards so that the safety of the vessel is assured and the scantlings provided can... Continue Reading →

Load Lines

Load line is a special marking, positioned at mid ship which indicates how much of the ship is underwater (also known as, draught of the vessel) and the maximum permitted limit in waters with different densities. The density of water primarily changes based on the temperature and salinity.   Why do we need a Load Line?... Continue Reading →

Ship Terms – 2

RISE OF FLOOR Rise of floor is the rise of the bottom shell plating above the horizontal baseline, measured at the ship’s side. The objective is to provide for the drainage of liquids to the ship’s centerline. CAMBER Camber or round of beam is the curvature of the decks in the transverse direction, measured as... Continue Reading →

Ship Terms -1

To understand the world of ships you first need to get acquainted with a some of the big and popular names that you will come across frequently. So let's not waste any more time and let's jump right into knowing them.... Say hello to: Length overall (LOA): is the length of the ship taken over... Continue Reading →

Why do Ships float?

Why do ships float? If this question bothers you don't worry you are not alone, many others have been baffled by this very question. So let's take a deeper look to understand... When an object is placed in water it is acted upon by two forces a) Buoyancy & b) Gravity. What is Buoyancy? Is... Continue Reading →

What’s Moulded dimensions?

You might have often come across the term moulded dimensions? To understand better, simply observe the ring on your hand, it has an inner diameter which = to the size of your finger and then it has a thickness / outer diameter. This inner diameter will be termed as the moulded dimension i.e moulded diameter.... Continue Reading →

Composite Boilers

Composite boilers are provided on ships where space is a constraint for providing two separate auxiliary boiler and exhaust gas economisers. The composite boiler consists of two separate sections of tubes (one for fuel oil firing and another for exhaust gas firing). Operation: Oil fired section is fired by an oil burner. Exhaust gas section is... Continue Reading →

Ship Sanitary System

Ship sanitary system is also known as domestic sea water system. The system is mainly used for flushing of toilets. The system consists of a hydrophore tank (pressurised tank) for storage of sea water. The tank is pressurised by compressed air (pressure about 6 bar) for pumping sea water to accommodation spaces. The filling of the tank... Continue Reading →

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