What is used to conveniently determine longitude at sea?
A)A clock without a pendulum (i.e.a marine chronometer).
B)A digital compass.
C)Magnetic compasses.
D)Sextants.

Question

Quizplus · Accepted Answer

A clock without a pendulum, also known as a marine chronometer, is used to accurately determine longitude at sea. By comparing the time on the chronometer to the time at a known location (such as Greenwich, England), sailors can calculate their longitude using the difference in time. Sextants can be used to determine latitude, but are not used for longitude. Digital and magnetic compasses are used for navigation, but not specifically for determining longitude.

What Is Used to Conveniently Determine Longitude at Sea