Abstract: A submersible lamp including a base member having a waterproof cable entry therethrough, one or more bulb holders mounted to the base member, a lamp cover positioned over the bulb holder(s), and an at least partially transparent over cover extending over the lamp cover and engaging with the base member in a sealing relationship so that the base member, the waterproof cable entry and the over cover together form a waterproof enclosure. The waterproof cable entry, which may be used independent of the submersible lamp, includes a housing through which a cable is adapted to pass, an elastomeric plug adapted to fit within a bore of the housing, and a securing device for urging the plug into the bore and secure the plug within the housing.