An inflatable boat processing method, an inflatable boat and a processing device thereof, wherein the processing method comprising: cutting material into boat-side material pieces and a boat bottom material piece following an inflatable boat sample; connecting the adjacent edges of the boat-side material pieces in an overlapped mode, thereby obtaining a boat-side body; connecting the boat-side body with the boat bottom, wherein a first connecting end of the boat-side body is connected with the boat bottom material piece in an overlapped mode by means of pressing and ultrasonic bonding; sealing the boat-side body, wherein the edge of the first connecting end is connected with the edge of the second connecting end of the boat-side body in an overlapped mode; obtaining an inflatable boat. A heating-and-pressing device and an ultrasonic soldering device are adopted to perform hot-melting and pressing, thereby achieving the connection of two material pieces using ultrasonic bonding.

A system and method for automatically joining a cut blank has a mandrel and clamps to conform the cut blank to the mandrel. The clamps include band clamps and pad clamps that pivot about axes that are obliquely angled with respect to the centerline of the mandrel. The clamp axes on one side of the centerline are a mirror image to the clamp axes on the other side. The cut blank has a line of symmetry and is clamped to the centerline of the mandrel with a locator bar. The clamps are then moved to a clamped position. In the clamped position, one edge of the cut blank meets another edge, and a robotic welder joins the edges.

A system and method for automatically joining a cut blank has a mandrel and clamps to conform the cut blank to the mandrel. The clamps include band clamps and pad clamps that pivot about axes that are obliquely angled with respect to the centerline of the mandrel. The clamp axes on one side of the centerline are a mirror image to the clamp axes on the other side. The cut blank has a line of symmetry and is clamped to the centerline of the mandrel with a locator bar. The clamps are then moved to a clamped position. In the clamped position, one edge of the cut blank meets another edge, and a robotic welder joins the edges.

This invention discloses a positioning and welding method for a ship stern thruster that relates to the technical field of ship manufacturing. A stern thruster is installed after adjusting and cutting hull stiffener panels according to the fitting condition of a prosthesis and a hull stiffener panel. The actions of manufacturing and installing the model, positioning the model structure by setting wire, adjusting the fitting condition of the model's stiffener panel and the hull stiffener panel can make it convenient to set wire and make it accurate to position the model. So the stern thruster is easy to install. The model can be repeatedly used, and the method is suitable for quantitative production.

This invention discloses a positioning and welding method for a ship stern thruster that relates to the technical field of ship manufacturing. A stern thruster is installed after adjusting and cutting hull stiffener panels according to the fitting condition of a prosthesis and a hull stiffener panel. The actions of manufacturing and installing the model, positioning the model structure by setting wire, adjusting the fitting condition of the model's stiffener panel and the hull stiffener panel can make it convenient to set wire and make it accurate to position the model. So the stern thruster is easy to install. The model can be repeatedly used, and the method is suitable for quantitative production.

A method for improving a fluid dynamic profile and fouling properties of a marine vessel with a welding seam which forms a cap protruding above a surface being under the waterline of a vessel. The method comprising amending the welding seam by applying a fairing to the underwater surface, e.g. by use of filler. A vessel with a fairing, and a coating system for a vessel and including a fairing.

A method for improving a fluid dynamic profile and fouling properties of a marine vessel with a welding seam which forms a cap protruding above a surface being under the waterline of a vessel. The method comprising amending the welding seam by applying a fairing to the underwater surface, e.g. by use of filler. A vessel with a fairing, and a coating system for a vessel and including a fairing.

A life raft may comprise a border tube and a canopy support tube coupled to an outer portion of the border tube. A first orifice defined by the canopy support tube is aligned with a second orifice defined by the border tube. A diameter of the first orifice is less than a diameter of the second orifice.

A life raft may comprise a border tube and a canopy support tube coupled to an outer portion of the border tube. A first orifice defined by the canopy support tube is aligned with a second orifice defined by the border tube. A diameter of the first orifice is less than a diameter of the second orifice.

In a membrane type heat insulation system for a cryogenic liquefied gas carrier cargo tank and a liquefied gas fuel container, a secondary heat insulation layer comprises a plurality of panels which are stacked in multiple layers while each pair of upper and lower panels is arranged to intersect each other, whereby heat loss which may occur in the gap between the panels can be minimized and deformation due to a temperature difference can be minimized.