Abstract: A protective device for a boat and a method of providing such a protective device which floats on a body of water are described, the protective device including a bottom portion which is arranged to be placed floatingly on or submergedly in the water underneath the hull of the boat, a top portion which is connected to the bottom portion, the top portion being constituted by a cloth-like material and being included at least as part of or being connected to a supporting device to be able to support at least a portion of the top portion in a distended position.

Abstract: A protective device for a boat which is floating in a water or is placed on land and a method of using same are described, the protective device including a top portion which is formed by a cloth-like material and which is bounded by a border area, the border area being arranged to be brought into substantially sealing contact with an adjacent portion in order thereby to provide a space defined by the adjacent portion and the top portion, and the top portion being included at least as part of or being connected to a supporting device to be able to carry at least a portion of the top portion in a distended position, the supporting device being activatable by means of a gas.