A concentric dual telescoping mast extends only under lightning risk, improving wind stability while maintaining grounded strike diversion.
Sensors extend a telescopic lightning rod only during storm conditions, diverting strikes from watercraft while limiting wind load.
A rotatable multi-column tank aligns discrete natural frequencies with vibration direction to widen tuning range and improve damping.
Internal liquid transfer between closed tanks maintains ship trim and draught without seawater ballast, improving stability and port maneuvering.
Adding ballast below the keel lowers center of gravity, boosting floating platform payload and stability without dry docking.
A passive articulating cradle intercepts a falling marine hose boom, absorbs impact energy, and reduces injury, damage, and spark risk.
Lightweight detachable floats and adjustable gunwale clamps stabilize canoes against capsizing without tools while staying portable.
Pressurized gas expands a reinforced inner bag to conform to irregular hull or tank holes, reducing flow with less handling force.
Sensors trigger pump-driven ballast redistribution between pontoons to keep a floating wind platform within a predefined tilt range.
Pre-installed airbags, compressed-air tanks, and automatic sensors help stabilize boats quickly during capsizing, submersion, or flooding.
Multiple float sensors combine local water-height readings to compensate for ship movement and estimate time to critical flooding.
Strong winds and kite tension can capsize multihulls; selective liquid ballast and displacement restore stable operation.
Bolted modular compartments fit a spar’s vacant slot, adding buoyancy without the derrick barge required for long cans.
Dynamic squat force analysis replaces static experience values to determine safe under keel clearance, preventing navigation hazards in shallow water.
Movable sponsons coupled with struts and shock absorbers dampen wave impacts, maintaining propeller immersion during high-speed turns.
Pin connectors join moveable planar platforms to longitudinal hulls for modular floating vessel assembly.
A modular unmanned underwater vehicle adjusts its center of mass using magnetic attachments to enable in-field configuration.
Segmenting roll angle measurements into ascending and descending heave phases enables early vibration detection without continuous complex processing.
Inelastic joining members prevent inflated bladder from compressing foam core, preserving buoyancy and enabling easy transport.
Outer shell rotates on ball bearings to keep inner cabin level, preventing capsizing in rough seas.
Adjustable connecting means and pressure sinks reduce floater attachment force against the hull side, resolving removal difficulties caused by high buoyancy.
Pivoting outriggers with retractable hydrofoils resolve draft limitations in shallow water while maintaining racing characteristics.
A yacht preserver system deploys an inflatable bladder to seal hull openings, preventing catastrophic sinking when bilge pumps fail.
A deformable balloon compresses against a wall opening using a sliding bar and flexible rope to create an immediate watertight seal.
Rotating a cantilevered weight on the keel generates righting moment while maintaining vertical orientation, reducing drag compared to swing keels.
Segmented mooring lines use slack second sections to isolate buoy members from extreme ice loads, preventing structural damage during disconnect operations.
A vessel stabilization system uses gravity-driven ballast flow to maintain stability without mechanical pumps.
Pump assemblies transfer fluid between isolated tanks in a closed inclination change system, preventing undesired inclinations caused by gravity-driven flow.
A hand-compressible foam plug expands to wedge into boat hull openings, providing a rapid temporary seal against water ingress.
Flexible units on a floating platform deform under buoyancy to break free from consolidated soil without external assistance.
Gas-driven inflatable bladder seals hull apertures, preventing water influx when bilge pumps fail.
A closed-loop trim control system distributes liquid between front, rear, and roll-stabilizing tanks to adjust ship orientation.
Segmented anchor line management fixes deployment length via retaining means, preventing rotation-induced drift in waves or currents.
Anchoring lines slide on rotary fixing means to connect a central counterweight, reducing pitch and roll movements while preventing line breakage.
A movable ballast system shifts weight inside the hull to counterbalance heeling forces and improve sailboat stiffness.
Protective stainless steel plate absorbs propeller impact energy to prevent hull damage and leakage.
Silicone fluid in buoyancy compartments compensates for compressibility mismatch, reducing energy expenditure for underwater vehicle ascents and descents.
Foot and hand holds on a hull-mounted righting device assist novice sailors in righting capsized boats with less physical effort.
Central oil storage columns and active ballast tanks resolve damage stability issues in exposed offshore environments while eliminating complex turret systems.
Segmented sliding pads confine Inconel welding to small areas, cutting work time while maintaining bearing strength.
Symmetric sponsons above the waterline create tunnel cavities that dissipate broken wave energy, enabling self-righting from a sail-on-water position.
Lateral hollow bodies on a variable trim boat fill with seawater to adjust buoyancy and improve stability.
Ferromagnetic heating elements cure a flexible composite patch directly on submerged hulls, eliminating dry-docking time and costs.
Pivoting propulsion drives generates transverse force to counteract watercraft rolling motion without impairing airflow or adding mechanical complexity.
A floating body recovery container uses a rotating agitation device to discharge target objects through an adjustable gap.