Water-course
131Lock (water transport) — Canal lock and lock keeper s cottage on the Aylesbury Arm of the Grand Union Canal at Marsworth in Hertfordshire, England …
132Advanced Open Water Diver — (AOWD) is a scuba diving certification level provided by several diver training agencies, such as PADI, SSI and UEF. The equivalent course provided by NAUI is the Advanced SCUBA Diver (historically, it previously had been known at NAUI as OW II… …
