Disclosed herein is an inflatable watercraft barrier in one example having an inflatable perimeter tube. Also disclosed is a diaphragm sealed to the perimeter tube to form the watercraft barrier between a watercraft and the water in which the watercraft barrier and watercraft float. In one example, a portion of the perimeter tube forms a gate portion which is at least partially selectively deflated so as to be denser than water, and therefore rotates about a gate pivot such that the watercraft may enter the watercraft barrier through the gate portion. Also disclosed is a water pump in fluid communication with the watercraft barrier so as to evacuate water from between the watercraft barrier and the watercraft.

Methods and apparatus for retrieving an unmanned marine vehicle from water are disclosed. The unmanned marine vehicle includes a float and a glider connected by a tether. The apparatus includes a buoyant frame having spaced frame arms defining a receiving bay sized to receive the float, and the buoyant frame includes a front end defining an opening of the receiving bay. A glider recovery assembly is coupled to the buoyant frame and includes a first tether guide coupled to the buoyant frame, and a second tether guide coupled to the buoyant frame, wherein the first tether guide and the second tether guide are cooperatively shaped to define a tether capture gap having a tether inlet adjacent the front end of the buoyant frame and a tether stop positioned rearward of the tether inlet.

Methods and apparatus for retrieving an unmanned marine vehicle from water are disclosed. The unmanned marine vehicle includes a float and a glider connected by a tether. The apparatus includes a buoyant frame having spaced frame arms defining a receiving bay sized to receive the float, and the buoyant frame includes a front end defining an opening of the receiving bay. A glider recovery assembly is coupled to the buoyant frame and includes a first tether guide coupled to the buoyant frame, and a second tether guide coupled to the buoyant frame, wherein the first tether guide and the second tether guide are cooperatively shaped to define a tether capture gap having a tether inlet adjacent the front end of the buoyant frame and a tether stop positioned rearward of the tether inlet.

Methods and apparatus are provided for deploying an unmanned marine vehicle into water, in which the unmanned marine vehicle includes a float and a glider connected by a tether. The apparatus includes a buoyant frame having a first frame arm, and a second frame arm spaced from the first frame arm to define a receiving bay between the first frame arm and the second frame arm, wherein the receiving bay is sized to receive the float. A glider retainer assembly is coupled to the buoyant frame and configured to releasably retain the glider. The apparatus further includes a payload deployment assembly having an attachment plate coupled to and positioned below the buoyant frame, and a payload compartment releasably coupled to the attachment plate by a payload release, wherein the payload compartment defines a receptacle sized to receive a payload coupled to the glider, and the payload compartment has a density greater than water.

Methods and apparatus are provided for deploying an unmanned marine vehicle into water, in which the unmanned marine vehicle includes a float and a glider connected by a tether. The apparatus includes a buoyant frame having a first frame arm, and a second frame arm spaced from the first frame arm to define a receiving bay between the first frame arm and the second frame arm, wherein the receiving bay is sized to receive the float. A glider retainer assembly is coupled to the buoyant frame and configured to releasably retain the glider. The apparatus further includes a payload deployment assembly having an attachment plate coupled to and positioned below the buoyant frame, and a payload compartment releasably coupled to the attachment plate by a payload release, wherein the payload compartment defines a receptacle sized to receive a payload coupled to the glider, and the payload compartment has a density greater than water.

A boat lift is attached to piles driven into the earth or to another object. The boat lift is held in horizontal position relative to piles or the object to which it is attached, but vertical movement of the boat lift relative to the object is permitted. The boat lift is connected to the piles by modular units or cube constructs that have a post extending there through. The post has a blade extending from it. The blades are attached at an angle, according to the application, to pile guides that engage piles. The pile guides vertically traverse the piles, permitting the boat lift to move vertically relative to the object, but fixing the horizontal position of the boat lift.

A boat lift is attached to piles driven into the earth or to another object. The boat lift is held in horizontal position relative to piles or the object to which it is attached, but vertical movement of the boat lift relative to the object is permitted. The boat lift is connected to the piles by modular units or cube constructs that have a post extending there through. The post has a blade extending from it. The blades are attached at an angle, according to the application, to pile guides that engage piles. The pile guides vertically traverse the piles, permitting the boat lift to move vertically relative to the object, but fixing the horizontal position of the boat lift.

An inflatable water sports board rack includes an inflatable tube comprising multiple paired inflatable uprights with gaps between the uprights configured to receive at least one water sports board there between; wherein the inflatable tube comprises an inflation valve for inflating the inflatable water sports board rack. A modular inflatable docking system as a kit of parts includes an inflatable water sports board rack as a pair of single inflatable retainers and at least one of: a floatable or inflatable platform to be coupled thereto.

An inflatable water sports board rack includes an inflatable tube comprising multiple paired inflatable uprights with gaps between the uprights configured to receive at least one water sports board there between; wherein the inflatable tube comprises an inflation valve for inflating the inflatable water sports board rack. A modular inflatable docking system as a kit of parts includes an inflatable water sports board rack as a pair of single inflatable retainers and at least one of: a floatable or inflatable platform to be coupled thereto.

A floating object securement system configured to provide limited movement between a floating dock and a support structure while not squeaking or making other obnoxious noises is disclosed. The floating object securement system may include a slidable base configured to slide along a track that confines the slidable base to only lateral movement generally aligned with a longitudinal axis of the track. The floating object securement system may include a primary movement control member coupled to the slidable base and extending outwardly from the slidable base. The primary movement control member provides limited movement and rotation of the bracket relative to the slidable base about X, Y and Z axes while not squeaking or making other obnoxious noises.