Abstract: The present invention is a self-setting, illuminated buoy marker for anglers, made of a translucent material which is elongated in shape and has a bifurcated body of two end members connected to a narrow waist stem member. The marker has a lighting device inside of the buoy marker, which may be illuminated for night fishing and gives off a soft illumination which is only visible for limited distances so as not to spook the fish or to give away the angler's precise position. Attached to the buoy marker is an anchor line and an anchor assembly which unwinds and sets the buoy in a precise location that the angler selects and maintains the buoy in that position. When the buoy is in an operative position it is visible to the angler from any direction in both daylight and darkness, regardless of wind or wave conditions.

Abstract: A subsea acoustic relocation system provides an apparatus that includes in one embodiment an anchor, and in another embodiment a weighted frame having in part a casing which has an inner bore with an open top portion. A line canister connected to the anchor or disposed within the casing bore has an opening through which a contained canister line can pay out. The canister line is placed within the line canister and is anchored at one end to the anchor or frame, the other end of the canister line being a free end which dispenses from the canister during operation. An acoustic transponder release assembly is detachably affixed to the anchor or frame (within the casing bore) at a provided removable connection which can be broken by an acoustic signal. The acoustic transponder release assembly has attached to it the free end of the line canister with the acoustic transponder release forming a temporary connection of the free end of the line to the frame.

Abstract: An electrical device in a buoyant, watertight housing, with electrical circuitry, including a battery, to illuminate an incandescent lamp to project either dispersed light or a beam through the translucent bottom of the housing, and to power a radio, as well as a water temperature thermometer. A handle is provided so that the device may be used as a portable lantern and/or radio.

Abstract: A safety marker for divers comprising detection means (5) designed to emit electrical signals upon the appearance of an element dangerous to the divers within a specific zone around said marker, means (8) for shaping these signals to control signalling means (6, 7) arranged on one hand at the surface to signal the presence of divers and on the other hand below surface to signal the presence of a danger to the divers.

Abstract: A portable self-setting marker buoy (10) comprises an elongate float body (12) having a pair of spherical end portions (14) secured to opposite ends of a tubular intermediate portion (16), to which one end of a line (20) is attached. A sinker (24) is attached to the other end of the line (20). Laterally projecting paddles (18) stabilize the body (12) to minimize drifting of the buoy after it has been thrown into the water and the line (20) unwinds as the sinker (24) hits bottom. An internal battery operated light source (26) is preferably included for illuminating the buoy during periods of low visibility or darkness.

Abstract: A channel marker includes signals which are unique so that the identity of a marker is readily apparent even against background lighting. The signals may include lights, prisms, lenses, luminescent strips and reflectors. The number and disposition of the signals further identify a marker. Photo-voltaic means can recharge batteries.