PROBLEM TO BE SOLVED: To provide an operation management system capable of accurately calculating a heel quantity necessary for ballast voyage during laden navigation.SOLUTION: An operation management system includes: an LNG carrier which uses natural gas provided by vaporizing LNG as fuel for propelling and comprises a cargo tank, a spray device and a ship side communication device; and land equipment including a land side communication device and a processor. The processor includes a first vaporized gas quantity estimation part which estimates the total quantity of natural vaporization gas generated from LNG remaining in the cargo tank when passing through a predetermined ballast route based on marine meteorological data, a second vaporized gas quantity estimation part which estimates the total quantity of spray vaporization gas vaporized by a spray operation when passing through the predetermined ballast route based on the marine meteorological data and a heel quantity calculation part which calculates a necessary heel quantity by adding the total quantity of the natural vaporization gas and the total quantity of the spray vaporization gas. The land side communication device transmits the necessary heel quantity to the ship side communication device while the LNG carrier is under laden voyage.SELECTED DRAWING: Figure 1
【課題】ラーデン航海中にバラスト航海に必要なヒール量を正確に算出することができる運航管理システムを提供する。【解決手段】運航管理システムは、LNGが気化した天然ガスを推進用の燃料とする、カーゴタンク、スプレー装置および船側通信装置を含むLNG運搬船と、陸側通信装置および処理装置を含む陸上設備と、を備え、処理装置は、海気象データに基づいて、予定バラスト航路を通ったときにカーゴタンク内に残存するLNGから発生する自然気化ガスの総量を推定する第1気化ガス量推定部と、海気象データに基づいて、予定バラスト航路を通ったときにスプレー作業によって気化するスプレー気化ガスの総量を推定する第2気化ガス量推定部と、自然気化ガスの総量とスプレー気化ガスの総量とを足し合わせて必要ヒール量を算出するヒール量算出部と、を含み、陸側通信装置は、LNG運搬船がラーデン航海中に、必要ヒール量を船側通信装置へ送信する。【選択図】図1
OPERATION MANAGEMENT SYSTEM
運航管理システム
2018-01-11
Patent
Elektronische Ressource
Japanisch
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F17C Behälter zum Aufnehmen oder Speichern verdichteter, verflüssigter oder verfestigter Gase , VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS |
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