This standard specifies the requirements for the forward and rearward vision at the steering position of motor boats with a hull length not greater than 24 m. This standard does not apply to the following small boats: -- tiller-steered boats with a maximum speed of less than 10 kn, 3.10; -- sailing boats, 3.11.
GB/T 18815-2013 Referenced Document
GB/T 16273.1-2008 Graphical symbols for use on equipment.Part 1: Common symbols
GB/T 18822-2002 Small craft less than 8m length of hull--Determination of maximum propulsion power rating