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Marine straight boom cranes are most suitable when the amount of space on deck is ample. These cranes offer a cost-effective alternative to knuckle booms or telescopic booms.
Those cranes are fixed where the lift is mostly done by the winch. Cannot be hydraulically extended and retracted and have no knuckle function.
Marine straight boom cranes are based on a pedestal slewing design with hydraulic cylinder luffing.
The cranes are available in the range from 141 - 30000 KN.m lifting moment and are supplied according to customer requirements. The stiff boom cranes can be delivered within a broad range of certifications and numerous optional features. Stiff boom cranes are typically used in dock,on fixed installations and in harbor conditions.
Features of Marine straight boom cranes:
Long-life surface treatment: corrosion protection
Operation from control platform on crane
Electric hydraulic drive
Continuous slewing
Low/high temperature operations
History of Modern Shipping
The period from 1800 until the Second world War saw the rise of the regular service liners. This was the result of the transport of cargo and passengers between Europe and the colonies in the East and the West, and the increasing number of emigrants leaving for North America.
Shipbuilding changed slowly but steadily to facilitate the new demands using new technologies.
The main developments were:
Wood as main construction material was replaced by iron and later by steel.
Sailing ships were replaced by steam ships and later by motor ships.
New types of ships like tankers and reefers were developed.
A gradual improvement in speed, size and safety.
In general, the big and versatile trade vessels of this period were still in use even as late as the 1970s. Transportation of passengers, general cargo, oil, refrigerated cargo, animals and bulk with one and the same ship was very common. Even today’s multipurpose ships do not achieve this level of versatility.
After some initial hesitation, the period after the Second World War showed a continuous increase in world trade and thus in sea trade. This increase in global commerce, only interrupted by short period of relapse, lasts even to this day. In the beginning, this resulted in more and more ships, subsequently they became faster and bigger. A lot of smaller ships were then taken out of service. The modernization of shipbuilding and navigation led to the loss of many jobs in the sector. After the 1970’s more and more universal ships were replaced by specialized vessels that can carry only one type of cargo. This process had already started on a much smaller scale since 1900. These new vessels are : oil tanker, bitumen tankers, chemical tankers, container ships, heavy-cargo ships, cattle ships, reefers.
Passenger liners have been superseded almost entirely by planes, because of the large distances involved. However, after 1990 the number of passenger ships that specialized in luxury cruises have increased enormously.
Should you have any preference for the marine fixed stiff straight boom deck crane, welcome to buy the quality equipment with our factory. As one of the most professional marine equipment manufacturers and suppliers in China, we will offer you good after-sale service and fast delivery.