dead reckoning

英語（米国） (en-US) 英語（イギリス） (en-GB)

名詞

可算名詞 不可算名詞

A method of estimating the position of a ship or aircraft by applying estimates of the distance and direction travelled to a previously known position. In respect to ships/boats, it excludes the effect of wind and current on the vessel. Compare with estimated position. Abbreviation: DR

日本語の意味

推定航法。過去に既知の位置から、移動距離と進行方向の推定値を用いて、船舶や航空機の現在位置を見積もる方法。

英語の意味

A method of estimating the position of a ship or aircraft by applying estimates of the distance and direction travelled to a previously known position. In respect to ships/boats, it excludes the effect of wind and current on the vessel. Compare with estimated position. Abbreviation: DR

このボタンはなに？

When the radar went offline, the navigator used dead reckoning—calculating course and distance from the last known fix—to determine the ship's current position.

レーダーが使えなくなったとき、航海士は推定航法を用いて、最後に確定した位置からの進行方向と距離を基に船の現在位置を割り出した。

詳細

意味（1）

A method of estimating the position of a ship or aircraft by applying estimates of the distance and direction travelled to a previously known position. In respect to ships/boats, it excludes the effect of wind and current on the vessel. Compare with estimated position. Abbreviation: DR

dead reckonings （ plural ）