DE2231733A1 - HULL FOR AN ICE BREAKING SHIP - Google Patents

Description

DR. INO. E. HOFFMANN · DIPL ·. ING. W. EITLE DR. RER. NAT. K. HOFFMANN D-8000 MÖNCHEN 81ARABELLASTRASSE 4 TELEPHONE (0811) 911087

Esso Research and Engineering Company, Linden, N.J./USA

Hull for an icebreaking magnificent ship

The present invention relates to a hull for an icebreaking magnificent ship. In particular, relates the invention on an ice-breaking tanker, the tanks being arranged mainly in the magnificent room. The ice breaking one Tanker according to the invention has a hull of special construction, which means better maneuverability, greater water displacement and better protection of the rudder and propeller when reversing the Ship is created.

A tanker with a special hull design for use in ice waters is known. This tanker,

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the S. S. Manhattan, led a research trip through the North-West Passage to Prudhoe Bay at the northern end of Alaska by. The S.S. Manhattan, however, was a converted conventional tanker with a special bow and other equipment, as it was not originally built for journeys through the North-West Passage was.

Also known are icebreakers with different hull designs that serve to provide a passage for others To form ships of conventional design.

The invention is based on the object of a cargo ship and in particular a tanker with To create a specially trained hull for ice breaking, which at the same time, due to its water displacement, is a can accommodate maximum cargo.

This object is achieved in that the ship has a bow breaking the ice and a Has hull width at the ice water line, which is largest in front of the center of the hull and smaller aft thereof, wherein the maximum hull width at the ice water line sloping down and inward, while the hull is below the ice water line in the aft part of the ship has a maximum width and the cross-sections through the hull from front to aft are designed so that the Hull sloping down and inward and at the stern of the ship downward and outward. Preferably towers above the stern of the ship, the drive and control elements, the latter expediently from a variety of Screws exist. The unconventional construction of the hull according to the invention creates a cargo ship, that can be used in arctic waters and at the same time

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represents an icebreaker in itself. For the first time, this is the prerequisite for the exploitation of those in arctic areas So far not exploitable natural resources, especially the oil deposits, created because of the ice-covered Arctic waters the transport of these natural treasures by sea was not possible.

In other words, the invention creates a seagoing ship for use in arctic waters, which has a specially designed hull, with the bow of the ship breaking the ice and the maximum Hull width at the ice water line is far in front of the middle of the hull. The width of the hull at the ice water line aft of its greatest extent decreases inward, so that one aft of the center of the ship there is a narrower width. Below the ice water line, the hull width reaches a maximum value aft of the maximum hull width at the ice water line, said Maintain the maximum hull width below the ice water line well into the aft part of the ship is. The width of the hull is greater than the width of the ice water line. The cross sections through the fuselage front to aft are designed so that the hull front down and in and aft down and drops outwards.

An embodiment of the invention is based on the Drawing described in more detail below. The drawing shows the ship's hull in a perspective view the invention.

The hull of the ship 12 is identified by the reference number 11. The ship 12 has a bow 13 *

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Stern 14, parallel or at an angle to the main deck 16 Longitudinal bulkhead 15, a floor 17 and transverse bulkheads l8 arranged parallel to one another. All bulkheads extend vertically downward from the main deck 16 to the floor 17. The bulkheads 15 and 18 form the side tanks 19 and the middle tanks 2o.

The bulkhead 18a creates a pump room, a cofferdam or fuel tank 21 is formed, which separates the tanks 19 and 20 from the engine room in the stern of the ship 12.

The hull 11 widens outwards to a maximum in the front part of the ship at the ice water line Width and slopes downwards and inwards. The aft cross-sections of the hull widen however, downwards and outwards to a greater width and thus generate a higher water displacement.

The ship may have two or more propellers 22, only two of which are shown, and rudders 23. the Screws 22 and the oars 2; 5 are arranged so that they lie under the rear overhang to protect against the ice. The lines 24 represent vertical cross-sections through the ship 12 from the stem to the stern and illustrate the essential features of the present invention.

Steam oil (not shown) can be used in the engine room or nuclear power transmission planar drive elements are provided while the main deck contains the rooms for the crew, a bridge and one or more chimneys, which lead up from the drive mechanisms and gases, Discharge vapors, smoke, etc. from the engine room.

The ship of the present invention breaks up

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its moving forward the ice in a downward-facing manner. Since the hull aft of its maximum width at the ice water line becomes narrower, but below the ice water line a maximum width maintains, the friction of the hull is reduced on the ice and further in the open water for the stern a space is created to swing out so that the ship has better maneuverability while maintaining it a high water displacement for the given waterline dimensions. When reversing the ship the ice is also moved away from the oars and propellers.

Polarity is caused by the bow breaking down the ice with a slope downwards and inwards at the maximum torso width obtain the following combined effect: On much wider waterway than the width of the stern, so that the ice friction is reduced and for the broken Ice space is created when the maximum hull width and a wider fairway to maneuver the stern when turning the ship in heavy ice. A significant drop on the sides of the fuselage, as shown in the drawing, supports and also keeps the ice breaking Ice away from the oars and propellers when the ship moves forward or aft.

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Claims (2)

Claims 1. Ice-breaking cargo ship, characterized in that it is a breaking down the ice Has bow and a hull width at the ice water line, which is largest in front of the middle of the hull and smaller aft of it with the greatest hull width sloping downward and inward at the ice water line, while the hull below the ice water line has a maximum width in the aft part of the ship, the maximum Width is greater than the width at the ice water line and the cross-sections through the hull from front to aft are designed so that the hull slopes downwards and inwards and at the stern of the ship downwards and outwards. 2. Ice-breaking cargo ship according to claim 1, characterized in that the stern on the drive and overhanging control organs. J5. Ice breaking cargo ship according to claim 1, characterized characterized in that the drive members are formed from a plurality of screws. 209RR3 / 0728