The supply chain is a complicated beast. From warehouse fulfillment through to the point of sale, there are a number of processes that can break down at any time and impact your business.
Recently archeologists found evidence suggesting that our seafaring history goes back at least 130,000 years. How our ancestors of that period navigated the vast oceans is not yet known. Till GPS, accurate clocks and reliable weather forecasts became common place, exploration was difficult and risky.