dutch speeding rescue brigade, waddenzee, holwerd

activity boat brigade coast coastal craft danger demonstrate demonstrating demonstration dutch exercise foam foaming friesland grey guard help helping holland holwerd ijmuiden institution knrm koninklijke life lifeboat lives maatschappij maritime nautical navigate navigating navigation nederlandse netherlands operation organization quick radar redding rescue royal sail sailing save saving sea seafaring seagoing security ship shipping shore show showing specialized speed speeding vessel voluntary volunteer volunteers wadden waddenzee water wave waves waving