Lodding

Lodding is a term used in maritime contexts to describe the use of a weighted line, or lodd, to interact with the seabed and to determine depth and bottom conditions. Historically it has been employed in both hydrographic sounding and traditional fishing, relying on a lead weight attached to a line that is lowered until it reaches the bottom. The length of line deployed provides a measure of depth, and in some variations a small sampling device or tallow cup may be used to collect material from the seabed for identification of sediment type.

In hydrographic surveying and navigation, lodding refers to the practice of sounding with a lead line. Before the widespread use of sonar, mariners would read the depth by observing how much line had been let out when the lead struck the bottom. The practice also allowed rough assessments of bottom characteristics, with sailors noting the feel and any material picked up on the weight. This method contributed to nautical charts and coastal knowledge prior to modern electronic depth finders.

In traditional fishing contexts, lodding can describe techniques that place bait or a lure near the bottom using a weighted line, sometimes combined with short, deliberate movements to provoke bites from bottom-dwelling species. The exact method varies by region and fishing culture, but the common element is the deliberate use of a weighted line and bottom contact to achieve fishing or depth-measurement goals.

Today, lodding is largely of historical interest, kept alive in demonstrations and by enthusiasts of traditional seamanship and fishing crafts.