In the mid 1800’s one of the biggest challenges of shipping was the loss of lives and material due to overloading of ships. The growing public concern on this matter finally made the British Parliament to take it seriously and find a solution.
Finally in 1875,a solution was implemented. The man who is now credited for coming up with a solution which saved and is still saving thousands of lives was a politician and social reformer named Samuel Plimsoll.
The Plimsoll line is a reference mark located on a ship’s hull that indicates the maximum depth to which the vessel may be safely immersed when loaded with cargo. This depth varies with a ship’s dimensions, type of cargo, time of year, and the water densities encountered in port and at sea.
Plimsoll line has been inspiration for the line seen in Plimsoll brand shoes.The line indicates the level beyond which shoe will get wet when used in water.
Though not confirmed, there is a belief that Plimsoll line was one of the inspiration for the famous London Underground transport and also was leveraged in indicating the safety levels used in water kettle.
Simple measurements can save millions of lives. Can we unearth such hidden treasures seen in everyday objects around us- traffic signals with sound for helping the vision impaired,products with click effect to confirm right positioning of parts etc.?