Background & Problem Statement

Background

Sailing 

• Racing sailboats can range in size, but for the scope of this project, the sailboat is intended for a single person to pilot it

• Multiple sails to be controlled

• Controlling of sails can range from pulling or releasing a rope a couple inches to pulling in several feet of rope

• Sailing can occur in both fresh and salt bodies of water

• The inconsistencies created by the wind make sailing a new experience every time

• Sails catching strong wind can overpower user when trying to control sails with rope

Some examples of sailing with a handicap

• Paralysis is different from patient to patient, even with the same type of injury

• No use of legs

• No hand grip strength

• Arm strength can still be present but possibly at a decreased level

Figure 1: Paul's sailboat used for competition.

Problem Statement

Paul is a competitive sailor with limited strength and range of motion in his fingers due to a spinal cord injury.

Our goal was to design a rope gripping mechanism for him to use while sailing. 

Requirements:

• Must hold up to 80lbs of pulling force

• Must hold 3/8” and 3/16” ropes

• Salt water resistant

• Easy to put on

• Cannot interfere with wrist flexion

• One handed device as not to interfere with steering with the other hand

• Release mechanism for safety precautions

Figure 2: Sailing Rope and Rope Cam Cleat commonly found on sailboats.