Pronunciation: [hˈand lˈiːd] (IPA) 
The correct spelling of "hand lead" is actually "handled". The confusion may arise from the pronunciation of the word, where the final "d" sound is often not fully articulated, giving the impression of "hand lead". The IPA phonetic transcription for "handled" is /ˈhændld/. It is important to pay attention to the actual sounds in a word when spelling, rather than relying solely on how it is pronounced.
Hand lead refers to a navigational tool used by mariners to determine the depth of water in a given area. It is often used in shallow or unfamiliar waters where the accuracy of electronic depth finders or charts may be compromised. The hand lead typically consists of a lead weight attached to a line marked at intervals, usually in fathoms or meters, to indicate the depth. The lead weight is made from a dense material, such as lead, to ensure it sinks swiftly to the seabed.
To use a hand lead, the mariner lowers it into the water while the vessel is in motion, allowing the lead weight to touch the seabed. By bringing the line in, they can measure the depth at which the weight hit the seabed, taking note of the corresponding mark on the line. The depth can then be determined by matching the mark with the appropriate measurement on the lead line. This information is crucial for navigational purposes as it helps the mariner establish the safety of their current position and assess the depth of water available for safe passage.
Hand leading requires skill and experience as factors such as currents, tides, and the shape of the seabed can influence the accuracy of the measurements. Therefore, mariners must interpret the information collected through hand leading in conjunction with other navigational aids to ensure they navigate safely and avoid potential hazards.
