So you're saying that people didn't always have iPhones with unlimited talk and data?
...btw, did not know the navigation part : )
So Top Time was a desk diver from the start? 😁
Thanks for the additional navigational detail - wasn’t aware of that one 👍🏻🙏🏻
spherical trigonometry using a chronograph (timing device)
GPS has largely replaced traditional celestial navigation Consider a navigator using a chronograph to measure the time it takes for a celestial body to transit the observer’s meridian. By applying spherical trigonometry, the navigator can calculate the di...