摘要:
The present invention relates to an evacuation system for positioning and maintaining a position of an inflatable floatable unit in relation to a maritime structure during evacuation of persons at sea, comprising a maritime structure from which persons are to be evacuated, an inflatable floatable unit configured to be deployed from the maritime structure, and a bowsing system comprising a first bowsing line extending from the maritime structure to the inflatable floatable unit, and a first bowsing winch configured to, by means of the first bowsing line, bowse and position the inflatable floatable unit in relation to the maritime structure after it has been deployed from the maritime structure into the water, wherein the bowsing system further comprises a first hydraulic cylinder having a piston with a first piston end extending outside the first hydraulic cylinder, and a first hydraulic accumulator which is in fluid communication with the first hydraulic cylinder, the first piston end being connected with the first bowsing line between the first bowsing winch and the inflatable floatable unit. Furthermore, the present invention relates to a bowsing method for positioning and maintaining a position of an inflatable floatable unit in relation to a maritime structure during evacuation of persons at sea.
摘要:
A lead-in cable used to tow a streamer behind a vessel includes a replaceable portion removably connected between a portion of the lead-in cable attached to the vessel and the streamer. Alternatively a lead-in additional cable is inserted between a lead-in cable and a towed streamer. The replaceable portion or the lead-in additional cable covers a portion most likely to be damaged between the streamer and the towing vessel.
摘要:
A method for protecting a boat hull is provided. A first polymer thermal spray coating is applied to a surface of a boat hull and to a rigid member. The rigid member is placed at a desired location on the surface of the boat hull. The rigid member is heated such that the first polymer thermal spray coating adhesively bonds the rigid member to the surface of the boat hull.
摘要:
A method for converting a single-hull vessel to a double hull vessel, and the converted double hull vessel, is disclosed. The single hull vessel to be converted has an outer hull surrounding a center cargo tank flanked by a port wing tank and a starboard wing tank, with spaced-apart transverse bulkheads extending between the port and starboard wing tanks to form one or more central tanks. An elevated floor is added to the central cargo tanks by installing new bottom plating spanning the transverse bulkheads and the sidewalls of the wing tanks. Support members are added to increase the strength of the elevated floor, the cargo tank, and the wing tanks, as needed. A sealed compartment is formed by the new elevated floor, the outer hull, and the sidewalls and bulkheads to protect the cargo from leaking out of the vessel should the integrity of the single hull be breached. The method achieves conversion of the single hull vessel to a double hull construction without breaching the integrity of the pre-existing single outer hull, and thus is faster and easier in converting single hull vessels to minimize cost of conversion and vessel outage.
摘要:
The present invention relates to a rebuilt double hull tanker and a method of rebuilding an existing single hull tanker into a rebuilt double hull tanker. The rebuilt double hull tanker includes an internally rebuilt double bottom hull comprising the existing outer bottom hull and a new inner bottom hull that is disposed internal and spaced apart from the existing outer bottom hull and externally rebuilt double side hulls (e.g., port and starboard) comprising the existing inner side hulls and new outer side hulls disposed external and spaced apart from the existing inner side hull. The method includes forming the new double hull, including a new double bottom hull and new double side hulls, over at least the cargo carrying portion of the tanker by installing at least a portion of the new inner bottom hull internally over the existing outer bottom hull through cut-outs in the topside decking. The method also includes the use of model basin testing and computational fluid dynamics to assist in the hull design in the area of the transition regions between the new outer side hull and the existing side hull.
摘要:
The invention relates to a process for modifying tanker ships. More specifically, the invention is directed to a process for modifying a non-methanol-carrying tanker to carry a methanol cargo destined for a methanol to olefin reaction system. The process includes providing a tanker having one or more holds that previously stored a non-methanol material. The process includes one or more of the following steps: (1) cleaning the holds of the crude/naphtha-carrying tanker to remove residual deposits, wherein the holds previously stored a non-methanol material; (2) providing a fire suppression system specially designed to prevent methanol fires; and (3) replacing methanol intolerant pump seals and flange gaskets in the tanker with methanol resistant seals and gaskets.
摘要:
A new tank ship, or an older ship which might not otherwise be economically retrofitted to comply with current regulations, is provided with a double hull requiring essentially no internal steel structural support by distributing and compacting sand in the bottom of the tank or cargo hold, applying a layer of reinforced concrete to the sand, laying steel plates on the surface of the cured concrete and welding the abutting edges of the plates to the hull, interior bulkheads, and to each other, to form a second fluid-tight bottom in the tank. The construction method can be used to retrofit older tankers to comply with Regulation 13G of MARPOL.
摘要:
The present invention relates to an evacuation system for positioning and maintaining a position of an inflatable floatable unit in relation to a maritime structure during evacuation of persons at sea, comprising a maritime structure from which persons are to be evacuated, an inflatable floatable unit configured to be deployed from the maritime structure, and a bowsing system comprising a first bowsing line extending from the maritime structure to the inflatable floatable unit, and a first bowsing winch configured to, by means of the first bowsing line, bowse and position the inflatable floatable unit in relation to the maritime structure after it has been deployed from the maritime structure into the water, wherein the bowsing system further comprises a first hydraulic cylinder having a piston with a first piston end extending outside the first hydraulic cylinder, and a first hydraulic accumulator which is in fluid communication with the first hydraulic cylinder, the first piston end being connected with the first bowsing line between the first bowsing winch and the inflatable floatable unit. Furthermore, the present invention relates to a bowsing method for positioning and maintaining a position of an inflatable floatable unit in relation to a maritime structure during evacuation of persons at sea.