Patent ID: 8543256
Filing Date: 2013-09-24
Classification: B60F,B63B

Abstract:
1. A watercraft comprising upper and lower compartments and upper and lower pumps for transferring liquid between said compartments so that the watercraft is right-side up when the liquid is at least predominately in the lower compartment and is upside down when the water is at least predominately in the upper compartment, wherein: the watercraft is configured to perform water transportation while the watercraft is upside down; the watercraft is configured to perform either water transportation or land transportation while the watercraft is right-side up; the watercraft further comprises a set of wheels; said wheels are configured to be out of the water during performance of water transportation while the watercraft is upside down; said wheels are configured to be in the water during performance of water transportation while the watercraft is right-side up; said wheels are configured to be rollable and on land during performance of land transportation while the watercraft is right-side up.