5 results about "Freeboard" patented technology

The design concerns a work or pleasure vessel capable of unobstructed passage through very shallow water passages, such as (but without exception) fixed bridges and the like. The upper part of the freeboard, the inflatable section, will collapse upon deflation of the air inside and rest upon the rigid part of the hull, thereby creating a very limited clearance height. This allows these obstacles in the waterway to be passed effortlessly and easily at all times. In both the inflated and deflated states, the inflatable part of the freeboard forms a permanently attached part of the vessel. After passing through the passage, the inflatable part of the freeboard is restored to its original shape using an air pump, after which the vessel safely navigates the waterway in its complete form.

This invention provides a method and system for determining the dimensions of the frontal area of ​​a graded vertical wharf, relating to the technical field of wharf frontal area dimension determination. The method includes: obtaining the port's design high and low water levels and the empty and full-load freeboard of the target vessel type; calculating the top elevations of the upper and lower platforms based on the obtained parameters; extracting the space requirements for operating equipment and process space according to a preset loading and unloading process plan, forming a process requirement dataset; using the upper platform as the design plane and the process requirement data as constraints, constructing a total width optimization function with the width of each functional area as a variable and minimizing the total land occupation cost of the frontal area as the objective, to solve for the design width of the upper platform; using the lower platform as the design plane, constructing a width constraint model to solve for the minimum feasible width; and constructing a set of design parameters based on the design elevations and widths of the upper and lower platforms, serving as the basis for determining the dimensions of the wharf frontal area. This invention provides reliable technical support for the scientific and efficient design of graded vertical wharves.

A kind of unshielded container ship built-in B type cabin, container ship is provided with B type cabin, the B type cabin is continuously arranged along the length direction, the top of the B type cabin is outwardly convex, higher than the highest point of the hull topside structure;The bottom of the B type cabin is oblique at the hull bilge portion protruding structure, and is oblique;Stop floating and rocking member is arranged between the sidewall of the B type cabin and the topside structure, folding rainproof structure is fixed above the stop floating and rocking member, and a plurality of stop floating and rocking members and the folding rainproof structure are arranged at equal intervals along the circumference of the B type cabin.The B type cabin of the present application protrudes above the deck and is exposed outside the hull structure, which increases the loading capacity of the B type cabin by 2 times of the traditional scheme, improves the LNG loading rate, and also maximizes the utilization rate of the container ship's cargo capacity, simplifies the construction process, reduces the weight of the empty ship, and achieves higher economic benefits.

The application discloses a kind of ship anti-piracy cabin emergency ventilation systems.The ship anti-piracy cabin emergency ventilation system includes the anti-piracy cabin under the topside deck, the side wall of anti-piracy cabin is provided with at least one air inlet pipe and one exhaust pipe in horizontal direction, air inlet pipe and exhaust pipe are close to topside deck, and air inlet pipe is at the opposite side of exhaust pipe, air inlet pipe and exhaust pipe extend to the outside of the hull from anti-piracy cabin respectively, the end of air inlet pipe extending into anti-piracy cabin is connected with extension pipe extending to the bottom wall of anti-piracy cabin, the upper side of extension pipe is provided with outside valve one, the lower side of extension pipe is provided with several air supply openings, the end of exhaust pipe extending into anti-piracy cabin is provided with outside valve two.The application solves the problem of high exposure risk and low safety in the prior art.