Abstract: Ship allocating device obtaining a shipping route data set indicating a shipping route of a routine transportation service, a ship number data set that indicates a number of ships used for the routine transportation service, and a schedule data set that indicates a schedule of assignments of ships for the routine transportation service. The ship allocating device obtains data sets indicating fluctuations in fuel consumption of ships. The ship allocating device calculates, for each of the candidate ships, fuel consumption required for the ship to traverse the shipping route indicated by the shipping route data set in accordance with a schedule indicated by the schedule data set based on the data set. The ship allocating device selects a number of ships equal to or greater than the number indicated by the ship number data set based on calculated fuel consumptions, and outputs data sets identifying selected ships.

Abstract: A ship managing device acquires input data indicating a predetermined voyage condition, and extracts condition data corresponding to the input data. The condition data is predetermined data describing a combination of a voyage condition and an amount of fuel consumption. The ship managing device, using the condition data, identifies the amount of fuel consumption under the voyage condition indicated by the input data, and determines whether there is scope for improvement in the amount of fuel consumption. Thereafter, the ship managing device generates and outputs monitoring data corresponding to the result of the determination.

Abstract: A ship's speed meter for measuring a speed relative to the water of a ship 10, the ship's speed meter including a wave transmitter 1 for emitting a sound wave toward a sea bottom 20, a wave receiver 2 for detecting a plurality of reflected waves, which are reflected waves of the sound wave having been emitted from the wave transmitter 1, reflected by a plurality of reflecting objects 30 positioned at different water depths, and an arithmetic processing unit 4 for calculating a ship's speed relative to the water of the ship 10 based on a frequency difference of the sound wave and the reflected wave.

Abstract: An object is to detect an insulation failure of a DC circuit with high sensitivity and in safety by means of a simple detection circuit. An insulation resistance measurement device of this invention is a device for measuring an insulation resistance to ground of a DC source circuit and is provided with connection terminals for connections to a positive electrode and a negative electrode of a series power supply, switch elements connected between the connection terminals and the ground potential and configured to switch connections between the connection terminals and the ground potential, resistive elements connected through the switch elements between the connection terminals respectively, and the ground potential, and a voltage detection unit for detecting voltage drops in the resistive elements.

Abstract: This ship 10 is a ship for transporting cargos such as containers, and it is possible to efficiently perform the cargo handling operation for cargos. A lower hold 16 is provided below a deck 15 in a hull 14. The deck 15 is provided with protruding portions 17 and 18 protruding in the right and left side directions of the hull, and a plurality of frameworks 21 each including vertical pillars 22 and 23 fixed to the respective protruding portions 17 and 18 and a horizontal beam 24 through which the vertical pillars 17 and 18 are connected to each other are provided for the deck 15. Openable partition covers 25 are provided between frameworks adjacent to each other, and an upper hold 26 is formed on the deck 15 by the partition covers 25 and the deck 15. The cargo handling operation for the lower hold 16 is performed by an inboard crane 33 provided in the lower hold 16, and at the same time, the cargo handling operation for the upper hold 26 is performed by a quay crane 37.

Abstract: An object is to detect an insulation failure of a DC circuit with high sensitivity and in safety by means of a simple detection circuit. An insulation resistance measurement device of this invention is a device for measuring an insulation resistance to ground of a DC source circuit and is provided with connection terminals for connections to a positive electrode and a negative electrode of a series power supply, switch elements connected between the connection terminals and the ground potential and configured to switch connections between the connection terminals and the ground potential, resistive elements connected through the switch elements between the connection terminals, respectively, and the ground potential, and a voltage detection unit for detecting voltage drops in the resistive elements.

Abstract: This ship 10 is a ship for transporting cargos such as containers, and it is possible to efficiently perform the cargo handling operation for cargos. A lower hold 16 is provided below a deck 15 in a hull 14. The deck 15 is provided with protruding portions 17 and 18 protruding in the right and left side directions of the hull, and a plurality of frameworks 21 each including vertical pillars 22 and 23 fixed to the respective protruding portions 17 and 18 and a horizontal beam 24 through which the vertical pillars 17 and 18 are connected to each other are provided for the deck 15. Openable partition covers 25 are provided between frameworks adjacent to each other, and an upper hold 26 is formed on the deck 15 by the partition covers 25 and the deck 15. The cargo handling operation for the lower hold 16 is performed by an inboard crane 33 provided in the lower hold 16, and at the same time, the cargo handling operation for the upper hold 26 is performed by a quay crane 37.

Abstract: An apparatus for controlling the pressure in a cargo tank 1 supplies BOG generated from liquefied natural gas stored in the cargo tank 1 to a burning system 6 through a compressor. In this apparatus, a reliquefaction plant 5 is disposed on the downstream side of first and second compressors 3 and 4 and on the upstream side of the cargo tank 1 so that BOG discharged from the second compressor 4 is liquefied by the reliquefaction plant 5 and the liquefied fluid is returned again into the cargo tank 1.

Abstract: A liner bag used for a container of a longitudinal box-shaped configuration having a door at one longitudinal end in which the liner bag comprises a bag main body incorporated in the container and connection means for connecting the bag main body at predetermined positions to the container, each of the connection means comprising a ring portion formed by drawing a portion of the bag main body into a strip portion and bending the strip portion and a connection mechanism for connecting the ring portion to the container. Since the ring portion is formed with the bag main body itself, an excess load, if applied, can be prevented from exerting only to a portion of the bag main body thereby enabling to effectively prevent breakage of the bag main body.

Abstract: A liner bag used for a container of a longitudinal box-shaped configuration having a door at one longitudinal end in which the liner bag comprises a bag main body incorporated in the container and connection means for connecting the bag main body at predetermined positions to the container, each of the connection means comprising a ring portion formed by drawing a portion of the bag main body into a strip portion and bending the strip portion and a connection mechanism for connecting the ring portion to the container. Since the ring portion is formed with the bag main body itself, an excess load, if applied, can be prevented from exerting only to a portion of the bag main body thereby enabling to effectively prevent breakage of the bag main body.