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: This invention relates to a solar heat-shielding coating composition which consists mainly of two kinds or more of pigments selected from red, orange, yellow, green, blue and purple pigments in such a manner as to yield a color of low lightness, particularly achromatic black, by additive mixture and a weather-resistant vehicle and a structure covered with said coating composition, with the composition capable of covering the outside of said structure exposed directly to the sun and suppressing a rise in the inside temperature.

Abstract: The solar heat-shielding paint composition of the present invention contains a solar heat-shielding pigment having a grain size of 50 .mu.m or less in a proportion of from 2 to 60% by weight of the solid content of the composition as a part or all of the pigment. The solar heat-shielding paint-coated structure having an outermost overcoat layer made of the said paint composition on the structure base displays an excellent solar heat-shielding effect and has a long-time durability with no problem of environmental pollution. The overcoat may be colored in any desired color to give a beautiful outward appearance. The coated structure is extremely useful as an outdoor structure, for example, marine structures such as decks or tanks of ships, as well as land structures such as architectures of petroleum tanks, houses, buildings, storehouses or gymnasia, and cars, tank lorries and refrigerator containers.

Abstract: The present invention relates to a method for forming on a magnetic amorphous alloy a film which is extremely thin, insulating, and corrosion-resistant and, particularly, can prevent secular deterioration of magnetic properties due to changing of the surface properties of the magnetic amorphous alloy.The method of the present invention comprises the steps of: applying, on the surface of the magnetic amorphous alloy, a predetermined amount of an acidic solution containing chromic acid, phosphoric acid, and a fluorine compound; and drying and baking the acidic aqueous solution, thereby forming, on the magnetic amorphous alloy, a film substantially comprised of a chromium and a phosphoric compound.

Abstract: The present invention relates to a magnetic amorphous alloy sheet having an improved insulating property and improved corrosion resistance.The present invention aims to provide a film which is used to cover the magnetic amorphous alloy sheet, thereby improving its corrosion resistance and increasing the layer insulation resistance, without impairing the magnetic properties.The film according to the present invention has a thickness of up to 1 .mu.m and comprises a chromium compound which comprises hydrated chromium oxide. The film may additionally comprises metallic chromium.The magnetic amorphous alloy according to the present invention is suitable for use as a transformer core achieving a high building factor.

Abstract: A flame-retardant polyamide composition comprising 98 to 60% by weight of a polyamide and, uniformly dispersed therein, 2 to 40% by weight of melamine cyanurate, characterized in that nearly 100% of the latter particles have a particle size of at most 35.mu. and at least 80% by weight of the particles have a particle size of at most 10.mu.; and a process for producing said composition.

Abstract: A surface treated steel materials coated with manganese having a film of MmOOH (manganic hydroxide) formed thereon, which show excellent corrosion resistance, workability and weldability. The surface treated steel materials may be further coated with zinc as a base coating underlying the manganese coating or further coated with a coating of at least one selected from the group consisting of P, B, Si, Cu, Mn, Cr, Ni, Co, Fe, Zn, Al, Ca, Mg, Ti, Pb, Sn, inorganic carbon and their compounds and still further coated with an organic coating. The film of MmOOH (manganic hydroxide) is formed by a treatment in an aqueous solution containing Cr.sup.6+.

Abstract: Manganese coated steel materials having a compact film of hydrated manganese oxide formed on the manganese coating by heating and drying. Manganese coated steel materials of the present invention show very excellent corrosion resistance in ordinary corrosive environments as well as special corrosive environments such as marine environments and young plant cultivation in mountaineous forests. For further improvement of corrosion resistance, organic coating and metal coatings are applied.

Abstract: A polyamide composition comprising 50 to 95 parts by weight of a polyamide and 50 to 5 parts by weight of an ethylenic copolymer of ethylene, an alkyl ester of unsaturated carboxylic acid, an unsaturated carboxylic acid and a metal salt of unsaturated carboxylic acid has excellent processability such as fluidity at melting and remarkably improved impact strength when molded. The polyamide composition may further contain one or more inorganic materials such as glass fiber without lowering physical properties.

Abstract: A bolt, nut and washer is first coated with an under-coating consisting of metal phosphate, and is then coated with a second or top coating consisting of a chromium compound and one or more of a metal salt of higher fatty acid, polyolefin and polyethylene tetrafluoride dissolved or dispersed in a vehicle. The composite coating improves the corrosion resisting and lubricating properties of bolts, nuts and washers coated therewith, and also serves as an excellent base for paints.

Abstract: Laminates of metal-containing copolymers between various kinds of substrates can be prepared with good results, where the copolymers consist of the following monomeric units: ##STR1## WHEREIN M is metal; R is a lower alkyl; R' and R" show, individually, hydrogen atom, a lower alkyl having 1 - 5 carbon atoms; and a, b, c and d are the respective mol numbers of the above-mentioned four units and have the following relations: ##EQU1## AND ##EQU2##