Abstract: In a ship control system of one embodiment, a route command unit outputs a route command including a target ship position and a target bow direction of a ship. An information detector detects ship information including an actual ship position and an actual bow direction of a ship. An external force vector estimation unit estimates an external force vector received by a ship, using the ship information and a hull motion model related to a hull motion of the ship. A control command unit controls both rotational frequency of a main engine and a rudder angle of a ship, based on the route command, the ship information, and the external force vector.

Abstract: A ship monitoring system includes: a shipboard information processing apparatus and including a shipboard communication unit and an information acquisition unit; and a support information processing apparatus and including: a support side communication unit capable of communicating with the shipboard communication unit; a time lag identification unit; and a state prediction unit. The time lag identification unit identifies a time from transmission of the ship motion information from the shipboard communication unit to reception of the ship motion information by the support side communication unit as a reception time lag. The state prediction unit inputs the ship motion information and the reception time lag to a ship motion model related to the ship motion of the ship to predict a motion state of the ship ahead of a motion state of the ship indicated by the ship motion information by a period of time based on the reception time lag.

Abstract: In a ship control system of one embodiment, a main engine controller performs, when controlling the rotational frequency of a main engine based on a target ship speed of a ship, feedback control of an actual ship speed of the ship to perform ship speed control for bringing the actual ship speed closer to the target ship speed. A turning judgment unit judges whether or not the ship will turn. A control change unit performs, when the turning judgment unit has judged that the ship will turn, lowering processing for lowering the responsiveness of the ship speed control.

Abstract: A coating film exhibiting excellent water and oil repellency is provided. The coating film comprises (a) calcium carbonate having an average particle diameter of 600-9,000 nm, (b) poly(vinyl alcohol), and (c) a copolymer including constituent units of a monomer having a C6 or lower perfluoroalkyl group.

Abstract: A coating film exhibiting excellent water and oil repellency is provided. The coating film comprises (a) calcium carbonate having an average particle diameter of 600-9,000 nm, (b) poly(vinyl alcohol), and (c) a copolymer including constituent units of a monomer having a C6 or lower perfiuoroalkyl group.

Abstract: To guide a user on a method for operating an application program. When the user pushes an activation button 5A, a navigation process is started. When the user selects a desired task, a subtask window 7 that shows a plurality of subtasks configuring this task is displayed in an application window 5. When the user selects a subtask, a plurality of action windows 8 related to this subtask are displayed simultaneously.