Abstract: A novel rotational and positionable robotic arm-controlled underwater bottom artifact and sample suction recovery apparatus and interchangeable bottom coring apparatus, wherein the interchange is effected underwater by rotation of a common deploying arm and remote-control mechanism.

Abstract: A creeper comprising a main panel and wheels is further equipped with storage drawers, an alarm signal, an adjustable lamp, an extendable panel, and an adjustable head rest. The storage drawers are disposed underneath the main panel so that they are accessible and out of the way. The alarm, also mounted beneath the main panel, may be used to signal an emergency. The extendable panel is slidably mounted on the underside of the main panel and may be pulled out from the foot end of the creeper to effectively extend the length of the same. The lamp is mounted on a flexible neck which attaches to the underside of the main panel so that the lamp may also be stored out of the way or directed as desired. The head rest is mounted to the head end of the creeper by hinges and may be positioned in an operative position or a stored position.

Abstract: A parking brake actuating and release mechanism actuated through a series of strokes of the brake pedal lever to tension the parking brake cable throughout the desired range, the parking brake cable being connected with an eccentric cable take-up member so that the effective leverage applied to the cable causes the mechanical advantage to increase through at least the predominant range of actuation of the mechanism. A release mechanism provides quick release of the parking brake so that it returns to the released position.