A marine gate has a buoyant variable length barrier and a cable management system employing two cables or lines. An opening line extends through the barrier to move the barrier from an expanded position (gate is closed) to a retracted position (gate is open) via a winch. A closing line moves the barrier from the retracted position to the expanded position using a winch. A weight is attached to the closing line for moving a submerged portion of the line to the seafloor when the barrier gate is retracted and the closing line is payed out by operation of its winch. The weighted line allows a portion or the entire cable system to be under tension at all times. The resulting cable geometry allows vessel operators confidence in knowing the cable location in the water depths at the gate, whether the gate is fully or partially opened.

A marine barrier has a plurality of column modules, each having a vertical column, and an impact net attached to and extending between the column modules. Each of the columns has four buoyant horizontal legs extending from its lower portion. A distal end of each of the legs is attachable to a distal end of a corresponding leg of an adjacent column module to form a series of diamond-shaped supports between the columns to support the columns and the impact net. When the barrier is floating in a body of water and a moving vessel impacts the impact net, the impact net deflects to transfer a force of the impact to one or more of the column modules, which in turn engage the water to transfer the force of the impact to the water, to arrest the motion of the vessel.

A marine barrier has a plurality of column modules, each having a vertical column, and an impact net attached to and extending between the column modules. Each of the columns has four buoyant horizontal legs extending from its lower portion. A distal end of each of the legs is attachable to a distal end of a corresponding leg of an adjacent column module to form a series of diamond-shaped supports between the columns to support the columns and the impact net. When the barrier is floating in a body of water and a moving vessel impacts the impact net, the impact net deflects to transfer a force of the impact to one or more of the column modules, which in turn engage the water to transfer the force of the impact to the water, to arrest the motion of the vessel.

A modular maritime deployment system designed for multifunctional subsurface and surface operations, addressing a wide spectrum of maritime needs. This innovative system provides a comprehensive solution adaptable for both security applications, such as countering Uncrewed Underwater Vehicle (UUV) threats, and commercial operations, including marine cultivation and environmental monitoring. The system's modular design facilitates easy assembly, reconfiguration, and scalability to support various applications, ranging from deploying security barriers to optimizing conditions for the growth of seaweed, algae, and shellfish. It features components capable of deploying acoustic dampening materials, blast panels, and electromagnetic shielding, enhancing the versatility and utility of the system in diverse maritime environments. Integrated with advanced sensors and automated deployment mechanisms, the system ensures effective deployment and management of both surface and subsurface devices, making it an indispensable tool for modern maritime operations across commercial and security sectors.

A modular maritime deployment system designed for multifunctional subsurface and surface operations, addressing a wide spectrum of maritime needs. This innovative system provides a comprehensive solution adaptable for both security applications, such as countering Uncrewed Underwater Vehicle (UUV) threats, and commercial operations, including marine cultivation and environmental monitoring. The system's modular design facilitates easy assembly, reconfiguration, and scalability to support various applications, ranging from deploying security barriers to optimizing conditions for the growth of seaweed, algae, and shellfish. It features components capable of deploying acoustic dampening materials, blast panels, and electromagnetic shielding, enhancing the versatility and utility of the system in diverse maritime environments. Integrated with advanced sensors and automated deployment mechanisms, the system ensures effective deployment and management of both surface and subsurface devices, making it an indispensable tool for modern maritime operations across commercial and security sectors.

A floating barrier float section, and a waterfront barrier system formed from a number of connected float sections. An elongated main flotation tube has radially outwardly extending fence posts with connecting members, such as nets, between them, forming multiple longitudinal net sections about the circumference of the flotation tube, at least one of the net sections extending upwardly and forming a barrier to vessel passage. A vessel strike tends to rotate the flotation tube about its longitudinal axis, absorbing the energy from the strike and rotating the flotation tube to bring another net section into position. An underwater ballast member and a stabilizer float member may be added for additional resistance to rotation.

A floating barrier float section, and a waterfront barrier system formed from a number of connected float sections. An elongated main flotation tube has radially outwardly extending fence posts with connecting members, such as nets, between them, forming multiple longitudinal net sections about the circumference of the flotation tube, at least one of the net sections extending upwardly and forming a barrier to vessel passage. A vessel strike tends to rotate the flotation tube about its longitudinal axis, absorbing the energy from the strike and rotating the flotation tube to bring another net section into position. An underwater ballast member and a stabilizer float member may be added for additional resistance to rotation.

A floating barrier system has a plurality of connected floating barrier units. Capture net segments are positioned on the floating barrier units by support post members, forming a barrier to vessel passage. Lanyards attach the ends of the capture net segments to the floating barrier units. Upon a vessel striking the capture net segments with sufficient force, the capture nets detach from the support post members and/or pull the support post members over, and the forces from the vessel are transferred via the lanyards to the floating barrier unit. The vessel is prevented from fully passing over the floating barrier unit, thus itself forming a barrier to passage by other vessels.

A floating barrier system has a plurality of connected floating barrier units. Capture net segments are positioned on the floating barrier units by support post members, forming a barrier to vessel passage. Lanyards attach the ends of the capture net segments to the floating barrier units. Upon a vessel striking the capture net segments with sufficient force, the capture nets detach from the support post members and/or pull the support post members over, and the forces from the vessel are transferred via the lanyards to the floating barrier unit. The vessel is prevented from fully passing over the floating barrier unit, thus itself forming a barrier to passage by other vessels.