Various implementations described herein are directed to providing lighting in an underwater transducer mounted to a boat. The transducer assembly includes a housing. The housing includes a transducer. The housing includes one or more lighting devices. The housing also includes an element integrated with an outer edge of the housing in a waterproof configuration. The element allows light from the one or more lighting devices to emanate outward from the outer edge of the housing.

A fixer is applied to position a marine light on a boat and to adjust an angle of the marine light, and the fixer contains: a base and a rotatable adjuster. The base is locked on the boat by using two first screw bolts, the marine light is disposed on a top of a positioning column, and the rotatable adjuster is arranged on a bottom thereof. The rotatable adjuster includes a clamp member arranged on a side thereof and includes a connection member having a square cross section and disposed on a bottom of the rotatable adjuster so as to connect the positioning column on the base. The base is in a protrusion shape and includes a groove defined on a middle section of a top of the base, and the groove has two slots respectively defined on two intermediate sections of two peripheral sides thereof.

A visual distress signal device that generates and emits bright light and/or infrared light to alert bystanders during times of distress. The device may be particularly suited for use on boats. The device may comprise a heat sink assembly that includes a screw-on collar that is attached to a housing of the device, such that the screw-on collar dissipates heat generated by electromagnetic radiation emitting elements away from an interior of the housing. The device may be configured for activation by a mobile phone or other mobile device which may be connected to the device via wireless communication. Furthermore, the mobile device may comprise a software application that can be used to alert persons in a contact list regarding the user's location and emergency status.

A marine vessel lighting system and a method of operating the same. The marine vessel lighting system may include a marine vessel having a switch, a light device that is configured to be coupled to the marine vessel to electrically couple the light device to the switch, and a processor. The lighting system may be configured to operate such that upon the switch being actuated from an off state to an on state, the processor is configured to activate the light device in accordance with a first mode of operation. Furthermore, upon the switch being actuated from the on state to the off state, and then from the off state back to the on state prior to elapse of a predetermined period of time, the processor is configured to activate the light device in accordance with a second mode of operation that is different than the first mode of operation.

A marine navigational light fixture includes a light source and a cutoff sub-housing holding the light source. The cutoff sub-housing has a main frame having first and second laterally opposite sides; first and second sidewalls projecting from the first and second sides of the main frame, respectively; and first and second cutoff surfaces located on the first and second sidewalls, respectively. The first and second cutoff surfaces are configured to provide practical cutoff of light emitted from the light source outside of a specified arc of visibility. The marine navigational light fixture also includes a main housing holding the cutoff sub-housing. A luminaire subassembly for the marine navigational light fixture includes a colored component having a color that is in the same color family as a color of light emitted from the luminaire subassembly. The colored component can be a lens, a filter cap, a PCB, and/or a telltale.

A luminous intensity compensator, comprising a light source; a sensor, configured to receive sensor information representing a position of the light source, and to output sensor data representing the position of the light source; one or more processors, configured to determine from the sensor data a distance between the light source and a reference point; determine a loss factor of a wavelength based on the determined distance between the light source and the reference point; determine a compensated luminous intensity to yield a target luminous intensity of the wavelength after luminous intensity reduction due to the loss factor; and output control data to control the light source to emit the wavelength at the compensated luminous intensity.

The present invention is directed to an electronic visual distress signal device. In one embodiment, the invention may comprise a waterproof housing comprising: a bulbous portion; a cylindrical portion; and a collar portion. An optical lens may be coupled to the collar portion, extend along a central lens axis, and comprise: an outer lens surface comprising a central outer flat surface located along the central lens axis and an outer convex surface radially outward of the central outer flat surface; and an inner lens surface comprising a central inner flat surface located along the central lens axis and an inner concave surface radially outward of the central inner flat surface. A light source may be positioned beneath the central inner flat surface so that light emitted from the light source passes through the optical lens. A power source may be located within the cylindrical portion.

A watercraft propulsion system includes an electric propulsion device attachable to a hull, an indicator located above a draft line of the hull and operable to indicate to surroundings of the electric propulsion device information about the state of the electric propulsion device, and a controller. The controller has a plurality of control modes including an electric propulsion device enabled mode in which the electric propulsion device is enabled to be driven, and is configured or programmed to perform an indicator control operation in the electric propulsion device enabled mode to actuate the indicator to indicate that the electric propulsion device is in a drivable state.

The present invention is directed to an electronic visual distress signal device. In one embodiment, the invention may comprise a waterproof housing comprising: a bulbous portion; a cylindrical portion; and a collar portion. An optical lens may be coupled to the collar portion, extend along a central lens axis, and comprise: an outer lens surface comprising a central outer flat surface located along the central lens axis and an outer convex surface radially outward of the central outer flat surface; and an inner lens surface comprising a central inner flat surface located along the central lens axis and an inner concave surface radially outward of the central inner flat surface. A light source may be positioned beneath the central inner flat surface so that light emitted from the light source passes through the optical lens. A power source may be located within the cylindrical portion.

Disclosed is a glide path indicator (2) comprising a light emitter (20) configured to emit a visible light signal that defines a glide path (14) for use by a pilot of an approaching aircraft (10), and a camera (22) configured to capture images of the approaching aircraft (10), the camera (22) being arranged such that at least part of the glide path (14) defined by the light emitter (20) is located within a field of view of the camera (22). The glide path indicator (2) may be mounted to a vehicle (4), for example, an aircraft carrier. The glide path indicator (2) may further comprise a stabilization module (26) configured to stabilize the light emitter (20) and the camera (22) so as to reduce or eliminate the effects of the vehicle's motion on the glide path (14) and the field of view of the camera (22).