Arming the Lead Weight with Tallow for Sampling
A hollow cavity in the base of the lead weight is packed with tallow to retrieve sand, shell, or mud samples from the seabed.
Hemp Sounding Lines and Color-Coded Markers
Hemp lines marked with leather strips, white bunting, and red serge at fixed intervals allowed rapid depth reading while underway.
Datum Reduction to Mean Lower Low Water
Soundings were adjusted for astronomical tide levels at the exact hour of observation to reference all depths to Mean Lower Low Water.
⚠️ Technical & Safety Verification
The empirical methods outlined in this study reflect verified classical hydrography, bathymetric surveys & coastal geodesy protocols and field measurements. Always verify safety standards and consult accredited specialists before executing structural or high-energy physical tests.