Abstract: A cooling arrangement for a liquid-cooled internal combustion engine with combined seawater-fresh water cooling is disclosed. The arrangement comprises a first heat exchanger for seawater-fresh water exchange and a second heat exchanger for seawater-lubricating-oil heat exchange, and a housing within which the first and second heat exchangers are arranged. The housing includes an inlet duct, a short-circuit duct and a thermostat for fresh water. An additional thermostat and an exchange filter for the lubricating oil are provided adjacent to the first and second heat exchangers.

Abstract: This invention relates to a self-supporting plastics shell construction, particularly to a multilayered boat shell constructed of elongate thermoplastic shapes disposed in a form-locking arrangement adjacent one another in the shape of a basic shell and covered with laminates of fiber-reinforced thermosetting plastics, and further concerns a method for producing such plastics shell construction with the aid of a form frame determining the final shape.A known type of boat hull shell is constructed as a sandwich structure of individual foam plastics plates, with their butt joints sealed with a filler and their surfaces covered with fiber-reinforced thermosetting plastics laminates. The forming frame employed in this case is a positive core which is removed after the outer laminate has become set, so that the interior surfaces can also be covered with a laminate. The assembly of the positive core and the time-consuming manufacturing process result in high production costs of such boat hull shells.