Abstract: The invention relates to a slurry-cooled helmet and to a head-cooling system. The helmet includes a hollow shell within which is positioned a plurality of tubes connected between an inlet and a discharge manifold. The manifolds are respectively connected to inlet and outlet means in the helmet shell.

Abstract: A buoyant body stabilized against both roll and heave is described in which the hull has a generally spherical surface and in which the weight of the hull and its contents is of such magnitude and is distributed so that the body floats with a predetermined portion up and so that the natural periods of both roll and heave oscillations are greater than the periods of any waves of significant height reasonably expected to be encountered in the waters where the body is deployed. Also described is the use of the body as a self-propelled off shore oil terminal into which a super tanker can discharge its entire load while remaining in deep, traffic free water.

Abstract: A buoyant body with a spherical hull having a well extending along a vertical axis. The well is open at both ends to permit flow of water therein and is such dimension as to make the period of its vertical oscillation greater than the period of vertical oscillation of any waves of significant height reasonably expected to be encountered by the body. The body is otherwise weighted so as to be tuned against roll oscillation.