dead reckoning

• Método de navegação que calcula a posição estimando a direção e a distância percorrida a partir de um ponto inicial conhecido, sem usar referenciais celestes ou eletrônicos. Também é usado em sentido figurado para descrever um processo baseado em estimativas, e não em dados precisos.

A method of navigation that calculates position by estimating direction and distance traveled from a known starting point, without using celestial or electronic references. Also used figuratively to describe a process based on estimation rather than precise data.

1. Navigation methodC1formal

   A method of estimating one's current position based on a previously determined position, course, and speed, without using celestial or electronic aids.

   Navegação estimada

   • The captain used dead reckoning to navigate through the fog.
   • Without GPS, sailors relied on dead reckoning for long voyages.
   • Dead reckoning can be inaccurate over long distances due to currents.

2. Figurative estimationC2informal

   A guess or estimate based on previous experience or known facts, rather than precise data.

   Estimativa aproximada

   • By dead reckoning, I'd say we're about halfway through the project.
   • His estimate of the budget was pure dead reckoning.
   • Using dead reckoning, she guessed the time of arrival.