A replacement fin for an underwater vehicle includes a fin defining a socket that includes a bore of a first diameter and an internal spring recess of a larger diameter. A coil spring is retained in the spring recess and has coils of an elongated coil shape. The coil spring can occupy a first canted position in which the coils are canted in a direction generally into the bore and the coils can occupy a second canted position in which the coils are canted in a direction generally out of the bore. The UUV has a post that can include at least one circumferential recess configured to engage the coil spring, and which can function as a lock in some canted orientations of the spring. Alternately, the socket is defined in the UUV and the fin includes a post sized to be received in the socket.

A replacement fin for an underwater vehicle includes a fin defining a socket that includes a bore of a first diameter and an internal spring recess of a larger diameter. A coil spring is retained in the spring recess and has coils of an elongated coil shape. The coil spring can occupy a first canted position in which the coils are canted in a direction generally into the bore and the coils can occupy a second canted position in which the coils are canted in a direction generally out of the bore. The UUV has a post that can include at least one circumferential recess configured to engage the coil spring, and which can function as a lock in some canted orientations of the spring. Alternately, the socket is defined in the UUV and the fin includes a post sized to be received in the socket.

A submarine apparatus includes an internal bellows pipe that compresses and decompresses as the apparatus descends into and ascends within a water current. When the device is in a rising pressure process, water may condense inside a tube which may be collected in a tank. Water may also be condensed due to cold temperatures of the surrounding water and relative warmer air inside the AWS. The water may be used as a fresh source of water for drinking. Some embodiments include a generator assembly that generates electricity from a propellor move within the current. The electricity may be routed to powered components in the apparatus.

A submarine apparatus includes an internal bellows pipe that compresses and decompresses as the apparatus descends into and ascends within a water current. When the device is in a rising pressure process, water may condense inside a tube which may be collected in a tank. Water may also be condensed due to cold temperatures of the surrounding water and relative warmer air inside the AWS. The water may be used as a fresh source of water for drinking. Some embodiments include a generator assembly that generates electricity from a propellor move within the current. The electricity may be routed to powered components in the apparatus.

Described herein are systems and apparatus for transverse gradiometer (TVG) acquisition using a towed platform. A first wing surface that is pitch-adjustable based on rotation about a leading edge of the first wing surface. A second wing surface that is pitch-adjustable based on rotation about a leading edge of the second wing surface, and wherein a pitch of the second wing surface is adjustable independently from a pitch of the first wing surface. Unlocking insights from Geo-Data, the present invention further relates to improvements in sustainability and environmental developments: together we create a safe and livable world.

Described herein are systems and apparatus for transverse gradiometer (TVG) acquisition using a towed platform. A first wing surface that is pitch-adjustable based on rotation about a leading edge of the first wing surface. A second wing surface that is pitch-adjustable based on rotation about a leading edge of the second wing surface, and wherein a pitch of the second wing surface is adjustable independently from a pitch of the first wing surface. Unlocking insights from Geo-Data, the present invention further relates to improvements in sustainability and environmental developments: together we create a safe and livable world.

Provided is a differential buoyancy steering system for an underwater glider. The inventive system utilizes multiple buoyancy engines to intentionally shift the buoyancy of the glider, thus moving the center of gravity. The shifting of the center of gravity and center of buoyancy causes the glider to roll and/or pitch, which can be used to control the steering of the glider as it travels through a column of water. A control system can independently adjust one or more buoyance engine bladders/plungers to independently control pitch and or roll. Additionally, one or more external turbines on the body of the glider can recharge the power system while the gilder is underway. The inventive method of glider control reduces complexity in the control system, reduces the number of moving parts, and extends times between battery recharge, thus improving reliability and lowering cost.

Provided is a differential buoyancy steering system for an underwater glider. The inventive system utilizes multiple buoyancy engines to intentionally shift the buoyancy of the glider, thus moving the center of gravity. The shifting of the center of gravity and center of buoyancy causes the glider to roll and/or pitch, which can be used to control the steering of the glider as it travels through a column of water. A control system can independently adjust one or more buoyance engine bladders/plungers to independently control pitch and or roll. Additionally, one or more external turbines on the body of the glider can recharge the power system while the gilder is underway. The inventive method of glider control reduces complexity in the control system, reduces the number of moving parts, and extends times between battery recharge, thus improving reliability and lowering cost.