Abstract: A cathodic protection system for offshore structures includes an elongated electrode carrier, such as a pipe, with a plurality of sacrificial anodes attached, that is placed on the ocean floor and electrically connected to the structures to be protected. The system is particularly useful for retrofitting cathodic protection systems for offshore structures that have exceeded their expected life.

Abstract: A filter element comprises a relatively rigid fluid-permeable cylinder (5), around which is provided a body (7) of non-woven fibrous filter material. A jacket (6) of permeable material is positioned around the outer surface of the filter material, and is heat-shrunk onto the filter material in order to hold this under substantially uniform radial compression over the whole of its area.

Abstract: A notch or cutout configuration for a pole vaulter's landing cushion provides increased protection for the athlete while avoiding interference with bending of the vaulting pole. The top of the notch is broad at the pole planting region and relatively narrow at a more forward region. In the preferred form, the base of the notch is narrow in the pole planting region and broadens towards the front of the cushion to conform with the outline of a vaulting box, the sidewalls and back wall of the notch being inclined outwardly in the pole planting region while the notch sidewalls in the more forward region are vertical. In addition to providing more extensive cushioning adjacent the vaulting box area, the configuration enhances performance by reducing the athlete's concerns about contact of the pole with the cushion and about landing.