| 摘要 |
PROBLEM TO BE SOLVED: To provide a draft gauge, a draft measurement instrument, and a draft measurement method capable of performing electric signal processing and eliminating the need of graduation reading work as compared to a conventional technology of a graduation reading system, and capable of significantly improving workability of water level measurement between a vessel to be measured and a small vessel that a measuring staff is on.SOLUTION: A draft gauge 10 equipped with a cylindrical member 11 that penetrates a water surface W in measuring a water level, and a water introduction member 12 connected to the lower part of the cylindrical member 11, which introduces water to the cylindrical member 11 from the water introduction member 12 and measures draft of a vessel in measuring a water level is configured so that a water level detection sensor part 14a of a water level detector 14 that outputs a signal for a result of the measurement by the water level detection sensor part 14a is inserted into the cylindrical member 11. |
