Abstract: In order to achieve improved properties in a rudder stock for rudders for water vehicles, at least the lower end area of the rudder stock to be inserted into the rudder and to be mounted in the rudder has a non-metallic material.

Abstract: A rudder for ships having a rudder blade which has a leading edge and a trailing edge. The rudder blade has two superimposed rudder blade sections; the leading edge sections of which are offset such that a first leading edge section is offset port or starboard and a second leading edge section is offset starboard or port. The first leading edge section has a port-sided offset surface which projects over the second leading edge section, and the second leading edge section has a starboard-sided offset surface which projects over the first leading edge section. A flow body is configured so that its dimensions are adapted to the dimensions of the offset surfaces. The flow body covers the offset surfaces and is arranged in the area of both offset surfaces.

Abstract: In order to flush with cooling air the goods stacked or palletized in a high-bay rack placed in a stationary store room or in the cargo space of a refrigeration ship by maintaining a constant cooling temperature in all the layers, an air recirculation system is proposed for which two superimposed air circuits (40, 140; 40?, 140?) are configured in the area of every rack module (30; 130), whereby at least one rack module, preferably two rack modules (30; 130), are placed in the cargo space and whereby a shaft (50) for the rack stacker is assigned to each rack module (30; 130) or a shaft (50) for the rack stacker is placed between the two rack modules (30; 130) placed the one besides the other, whereby the shaft (50) serves a common pressure distribution chamber of the inlet air for each rack module (30; 130).

Abstract: A high performance full spade rudder for ships includes a rudder blade, a rudder trunk and a rudder post. The rudder blade widens from the leading edge to a central area which constitutes the widest point of the rudder profile. The rudder blade profile tapers from the central area to a narrow rear area and widens again from the rear area to the trailing edge. A bearing is placed in an inner longitudinal bore of the rudder trunk for bearing the rudder post, wherein the bearing penetrates with its free end into a recess, taper or the like in the rudder blade. No bearing is provided between the rudder blade and the rudder trunk. The bearing for the rudder post is placed in the rudder trunk in the area of the free end of the rudder trunk.

Abstract: In a rudder for ships composed of a rudder blade with a rudder post (40) held and supported in a rudder trunk (20), the rudder trunk (20) is made of a fiber composite material and is inserted into a nautical outer trunk tube (90) made of steel or of another appropriate material prepared by a shipyard, extending into the lower edge of the head box and inserted into the rudder blade (30). After alignment of the rudder trunk (20) in the nautical trunk tube (90), the intermediate space between both components (20, 90) is cast with a cast resin, or both components (20, 90) are bonded together.

Abstract: A device (100), for the checking and measurement of the journal bearing clearance between the outer bearing on the rudder shaft (25) of a rudder for water-borne craft and the inner bearing (32) on the rudder trunk (20) corresponding with the outer bearing (31), is characterized by a measurement rail (70) made of a springy elastic material having internal stiffness, which can be introduced by means of a guide rail (60), provided with a grip-type handle (61), into the gap between the outer bearing and the inner bearing and hence into the clearance measurement region, with a measurement probe (80) located at its free end (70a) for the clearance width measurement, wherein the measurement rail (70) with the measurement probe (80) with a prescribed thickness (a) are exchanged for measurement rails with measurement probes with other thicknesses until the achievement of an agreement of the clearance width with the thickness of a measurement rail (70) with the measurement probe (80).

Abstract: The rudder post (40) for rudders for water vehicles has end sections (41, 42) made of a metallic material, in particular of wrought iron, and a mid post section (45) made of a nonmetallic material connected with the end sections so that the rudder post has a relatively low weight even for a very big length by maintaining a high flexural strength and torsion stiffness.

Abstract: The invention relates to a rudder for sea vessels, consisting of a main rudder and a fin which is coupled thereto by means of a vertical piston (15), restrictively guided by the main rudder and provided with a horizontal piston (11) The vertical piston (15) and the horizontal piston (11) are connected to each other via a hinge bolt to form a sliding pivoting piston coupling (100) and a bearing housing (16) of the vertical piston (15) is fixed to the hull of the vessel. In order to reduce the forces acting upon the sliding bearing of the vertical coupling bolt and horizontal pivoting bolt in addition to the hinge bolts connecting said bolts, the vertical piston (15) is supported by an additional counter bearing (27) on the hull of the vessel.