upperworks [1]
				   		Small equipment and accessories on a boat’s deck especially for rigging, adjusting and handling the sails.
				
 
					
					
					
						turnbuckle 
						Instrument for adjusting the tension of a rope; it is made up of a hollow cylindrical body with a threaded shank screwed onto each end.
				  	
 
					
						winch 
						Small crank for heaving a rope tight; it usually has a ratchet preventing it from rotating in the counter direction.
				  	
 
					
						shackle 
						U-shaped part that closes with a threaded shank; it is used especially for joining two chains or for attaching ropes.
				  	
 
					
						snap shackle 
						Metal ring that closes automatically with a spring; it is used to attach various elements such as sheets and sails.
						
						
				  	 
					
						hank 
						Hook that is kept closed by a piston mechanism and set on a shank, which rotates on a ring; it prevents the ropes that are attached to it from twisting.