A multi-tank/vessel buoyancy system for use in deploying and connecting tendons or other elongate members between subsea anchors and floating/semi-submersible platforms. The vessels are interconnected at axially spaced locations toward their upper ends and lower ends, there being an equalizing system proximate the top ends of the vessels to permit ingress and egress of air into the vessels and a lower water equalizing system to permit free-flowing ingress and egress of water into the vessels. There is at least one clamping system operatively connected to the multi-vessel system, the clamping system, like the valving systems, being remotely, acoustically operable from a PLC on a work barge or the like.

A life raft system for an aircraft, comprising a storage container; an inflatable life raft that is stored in the storage container in normal operation mode, an inflation device for inflating the inflatable life raft in an emergency mode, and a control unit for activating the inflation device in the emergency mode; wherein the control unit comprises a floatable control buoy with an activation member that is operable for activating the inflation device, wherein the floatable control buoy is provided for operation at a predetermined distance remote from an associated aircraft in an emergency mode.

A life raft system for an aircraft, comprising a storage container; an inflatable life raft that is stored in the storage container in normal operation mode, an inflation device for inflating the inflatable life raft in an emergency mode, and a control unit for activating the inflation device in the emergency mode; wherein the control unit comprises a floatable control buoy with an activation member that is operable for activating the inflation device, wherein the floatable control buoy is provided for operation at a predetermined distance remote from an associated aircraft in an emergency mode.

The gravity buoy includes a can float that is visible above the waterline and provides the buoyancy for the device. A pulley assembly permits a tether under constant tension to pass easily through a point near the bottom of the can float, thus creating a pull point. A tension weight provides the downward force that puts the tether under constant tension so that the can float maintains its location above the anchor, and helps keep the can float vertical in the water along with concrete ballast inside the bottom of the can float. An anchor provides the downward force that will keep the buoyancy of the can buoy and the weight of the tension weight from displacing the gravity buoy from its intended location. An inline weight provides downward force on the anchor-side of the tether.

The gravity buoy includes a can float that is visible above the waterline and provides the buoyancy for the device. A pulley assembly permits a tether under constant tension to pass easily through a point near the bottom of the can float, thus creating a pull point. A tension weight provides the downward force that puts the tether under constant tension so that the can float maintains its location above the anchor, and helps keep the can float vertical in the water along with concrete ballast inside the bottom of the can float. An anchor provides the downward force that will keep the buoyancy of the can buoy and the weight of the tension weight from displacing the gravity buoy from its intended location. An inline weight provides downward force on the anchor-side of the tether.

The diver's floating marker assembly is a marker buoy. The diver's floating marker assembly is configured for use in water. The diver's floating marker assembly is a safety device that marks an area in the water where one or more divers are operating. The diver's floating marker assembly is comprises a marker structure, a reel structure, and a tether. The tether attaches to the marker structure. The marker structure is a buoyant structure that visibly marks the area in the water where one or more divers are operating. The reel structure stores, pays out, and retracts the tether. The tether is paid out and retracted by the one or more divers while underneath the water. The use of the reel structure allows the position of the marker structure to be set by the one or more divers while underneath the water.

The diver's floating marker assembly is a marker buoy. The diver's floating marker assembly is configured for use in water. The diver's floating marker assembly is a safety device that marks an area in the water where one or more divers are operating. The diver's floating marker assembly is comprises a marker structure, a reel structure, and a tether. The tether attaches to the marker structure. The marker structure is a buoyant structure that visibly marks the area in the water where one or more divers are operating. The reel structure stores, pays out, and retracts the tether. The tether is paid out and retracted by the one or more divers while underneath the water. The use of the reel structure allows the position of the marker structure to be set by the one or more divers while underneath the water.

The invention relates to a buoy comprising a buoyant, plastic core component, and a plurality of detachable flotation components that support and surround the core component. The buoy is preferably more than 2.5 meters diameter, but the diameter of the core component is preferably less than or equal to 2.35 meters diameter. This facilitates transport in a single shipping container. A novel tie bar assembly and novel lifting/mooring mounts are also disclosed.

The invention relates to a buoy comprising a buoyant, plastic core component, and a plurality of detachable flotation components that support and surround the core component. The buoy is preferably more than 2.5 meters diameter, but the diameter of the core component is preferably less than or equal to 2.35 meters diameter. This facilitates transport in a single shipping container. A novel tie bar assembly and novel lifting/mooring mounts are also disclosed.

The amphibious unmanned patrol vehicle includes a buoy, a waterproof cable and a submersible amphibious vehicle. An end of the waterproof cable is connected to a first controller of the buoy; and another end thereof is connected to a second controller of the submersible amphibious vehicle. A bottom end of the buoy is connected to a top end of the submersible amphibious vehicle which is configured to realize movement and operation of a whole system. The waterproof cable is configured to connect the submersible amphibious vehicle, and the buoy configured to ensure real-time communication between the submersible amphibious vehicle and an external environment during operation of the submersible amphibious vehicle. A height difference between an upper surface and a lower surface of the automatic reeling and unreeling cable device is equal to a thickness of the waterproof cable. The length of the waterproof cable is adjusted automatically in real time.