Hoist block storage and exchange device for the vertical storage of a main hoist block and an auxiliary hoist block and a hook (14a, 14b), characterized in that the device is adapted to facilitate the exchange between a first hoist configuration with the main hoist block and a second double fall wide hoist configuration wherein the main hoist block and the auxiliary hoist block are interconnected adjacent each other, - the main hoist block comprising at least one sheave on a main axle, a sheave defining a sheave plane, which sheave plane(s) is (are) orientated vertically in the hoist block storage and exchange device, the main hoist block comprising in a bottom part thereof a hook connector for connection to a hook, the hook connector and the main axle defining a connector plane perpendicular to the sheave plane, the main hoist block further comprising one or more main block connectors (43e, 43f) for the connection to the auxiliary hoist block, - an auxiliary hoist block, comprising at least one vertically orientated auxiliary sheave on an auxiliary axle, the auxiliary hoist block comprising one or more auxiliary block connectors (48e, 48f) adapted to be connected to the main block connectors (43e, 43f) to interconnect the main hoist block and the auxiliary hoist block adjacent each other in the second double fall wide hoist configuration, whereby at least one auxiliary sheave is in a common sheave plane of the main hoist block, the device comprising: - a main hoist block receiver for storage of the main hoist block, the main hoist block receiver enabling the main hoist block to be stored in a first orientation wherein the connector plane is vertical, corresponding to the first hoist configuration, as well as in a second orientation wherein the connector plane is tilted, at an angle with the horizontal, allowing the interconnection with the auxiliary hoist block to obtain the second double fall wide hoist configuration, - a hook receiver for storage of at least one hook, provided below the main hoist block receiver, the hook receiver enabling the hook connector of the main hoist block and a hook to be connected to each other in the first and second hoist configuration, - an auxiliary hoist block receiver for storage of the auxiliary hoist block, comprising an auxiliary hoist block guide along which the auxiliary hoist block is movable between a first position remote from the main hoist receiver and a second position adjacent the main hoist block receiver, allowing the interconnection of the auxiliary hoist block and the main hoist block into the second double fall wide hoist configuration. - the main hoist block comprising at least one sheave on a main axle, a sheave defining a sheave plane, which sheave plane(s) is (are) orientated vertically in the hoist block storage and exchange device, the main hoist block comprising in a bottom part thereof a hook connector for connection to a hook, the hook connector and the main axle defining a connector plane perpendicular to the sheave plane, the main hoist block further comprising one or more main block connectors (43e, 43f) for the connection to the auxiliary hoist block, - an auxiliary hoist block, comprising at least one vertically orientated auxiliary sheave on an auxiliary axle, the auxiliary hoist block comprising one or more auxiliary block connectors (48e, 48f) adapted to be connected to the main block connectors (43e, 43f) to interconnect the main hoist block and the auxiliary hoist block adjacent each other in the second double fall wide hoist configuration, whereby at least one auxiliary sheave is in a common sheave plane of the main hoist block, - a main hoist block receiver for storage of the main hoist block, the main hoist block receiver enabling the main hoist block to be stored in a first orientation wherein the connector plane is vertical, corresponding to the first hoist configuration, as well as in a second orientation wherein the connector plane is tilted, at an angle with the horizontal, allowing the interconnection with the auxiliary hoist block to obtain the second double fall wide hoist configuration, - a hook receiver for storage of at least one hook, provided below the main hoist block receiver, the hook receiver enabling the hook connector of the main hoist block and a hook to be connected to each other in the first and second hoist configuration, - an auxiliary hoist block receiver for storage of the auxiliary hoist block, comprising an auxiliary hoist block guide along which the auxiliary hoist block is movable between a first position remote from the main hoist receiver and a second position adjacent the main hoist block receiver, allowing the interconnection of the auxiliary hoist block and the main hoist block into the second double fall wide hoist configuration.