Dead Reckoning

"Dead reckoning allows a navigator to determine his present position by projecting his past courses steered and speeds over ground from a known past position. He can also determine his future position by projecting an ordered course and speed of advance from a known present position. The DR position is only an approximate position because it does not allow for the effect of leeway, current, helmsman error, or gyro error."

-Nathaniel Bowditch
The American Practical Navigator

The header photograph was taken October 31, 1991 on Assateague Island National Seashore during what has become known as "The Perfect Storm." My friend, Keith Krombel, and I had camped on the island the night before and came within a few inches of being washed out to sea. In this photo we are hiking out of the back country.

Unless other attribution is expressly specified, all materials are Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 , 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024

William E. Tracy.