Tugs are in effect marine tractors. Their purpose is to push/tow vessels when they cannot use their own engines or do not have any form of self propulsion. They are designed according to the environment in which they will operate, ie harbours, rivers or deep sea and according to their…
Dredgers come in a variety of forms, types and sizes. Their purpose is to remove silt or sand from harbours, rivers or entrance channels to harbours, in order that seagoing vessels have sufficient depth to navigate safely in these confined spaces. They are also used in underwater mining operations. Whilst…
There are a variety of fishing vessels which include trawlers, long-line craft, trap fishing craft, seiners, etc. Each has a different method of catching fish and is equipped accordingly. The seiner is a type of fishing vessel that uses sein nets to trap fish near the surface of the sea.…
Heavy lift vessels can be divided into two types, ie semi-submersible and conventional heavy lift vessels. The semi-submersible ships can lower their main cargo deck below the water line and large floating objects such as oil drilling rigs or damaged ships can be floated on or off the vessel. The…
The reefer or refrigerated cargo carrier is basically a general cargo vessel with well insulated holds. The cargoes carried are those requiring refrigeration, ie fruit, vegetables, meat, fish, etc. The cargo is usually packaged in boxes and palletted. It has small hatches, its own cargo handling gear and is fast.…
There are basically two types of liquefied gas carrier: One to carry natural gas such as butane (LNG – liquefied natural gas). LNG is carried by reducing the temperature to -160° C when it is carried in fast well insulated and expensive ships or by converting it (expensive process) into…
