- No sea-going vessel occupying moorings in the docks or in the stream or lying at a dock berth shall turn her screws without giving sufficient warning to all boats in the vicinity. During engine trial, screws may only be turned at dead slow speed for short periods, in each direction. No trial under steam shall be made by a vessel lying alongside the Calcutta or Garden Reach Jetties except by direction of the Assistant Harbour Master or Pilot in charge.
