REINFORCED BUOYANT RUBBER TUBES [ AND REINFORCED BUOYANT TUBES MADE OF RUBBER-LIKE MATERIAL, ALL ] FOR INDUSTRIAL USE IN OFFSHORE DOCKS AND IN OFFSHORE OIL DRILLING RIGS; NON-REINFORCED BUOYANT RUBBER TUBES [ AND NON-REINFORCED BUOYANT TUBES MADE OF RUBBER-LIKE MATERIAL, ALL ] FOR INDUSTRIAL USE IN OFFSHORE DOCKS AND OFFSHORE OIL DRILLING RIGS