CA1250706A - Emergency gangway - Google Patents
Emergency gangwayInfo
- Publication number
- CA1250706A CA1250706A CA000496154A CA496154A CA1250706A CA 1250706 A CA1250706 A CA 1250706A CA 000496154 A CA000496154 A CA 000496154A CA 496154 A CA496154 A CA 496154A CA 1250706 A CA1250706 A CA 1250706A
- Authority
- CA
- Canada
- Prior art keywords
- gangway
- section
- servo
- elevation
- controlling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/14—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
- B63B2017/0072—Seaway compensators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/14—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts
- B63B2027/141—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts telescopically extendable
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Earth Drilling (AREA)
- Glass Compositions (AREA)
- Materials For Medical Uses (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
ABSTRACT
Emergency gangway This invention relates to an emergency gangway capable of being deployed from an emergency support vessel and being landed safely on an offshore platform in gale force conditions, despite movements of the vessel relative to the platform.
The gangway comprises:
(a) a first section pivotally and rotatably mounted on a support vessel, (b) a second section telescoping within the first, (c) a servo-mechanism for controlling the extension of the second section of the gangway, (d) a servo-mechanism for controlling the elevation of the gangway, (e) a servo-mechanism for controlling the slew of the gangway and (f) stabilising means for stabilising the end of the gangway in space.
Emergency gangway This invention relates to an emergency gangway capable of being deployed from an emergency support vessel and being landed safely on an offshore platform in gale force conditions, despite movements of the vessel relative to the platform.
The gangway comprises:
(a) a first section pivotally and rotatably mounted on a support vessel, (b) a second section telescoping within the first, (c) a servo-mechanism for controlling the extension of the second section of the gangway, (d) a servo-mechanism for controlling the elevation of the gangway, (e) a servo-mechanism for controlling the slew of the gangway and (f) stabilising means for stabilising the end of the gangway in space.
Description
~ZS~ 6 59~t8(2) E~ERGENCY GANGWAY
_ .
This invention relates to an emergency escape gangway suitable for installation on an emergency support vessel.
In recent years the number of offshore oil production platforms has grown considerably, particularly in waters which are exposed to severe climatic conditions such as the North Sea where gale force winds and temperatures below free~ing are not infrequent. Provision must always be made for emergencies which requtre the rapid evacuation of these platfonms.
In extreme conditions, traditional means of escape such as lifeboats or escape chutes are occasionally inoperative, often hazardous and æometimes leave victims immersed ln the sea or under exposed conditions for undesirably long periods of time, with possibly fatal results.
For this reason an emergency support vessel (ESV) has been built and is permanently on-station in the North Sea in the vicinity of a group of production platforms. This vessel has both emergency and support roles. One of its emergency roles is to provide a rescue and lifesaving facility to a stricken offshore installation by enabling direct evacuation of personnel by means of a gangway.
The vessel is designed to keep station bo~h in the vicinity of a platform or close ~o it9 linked by ~he gangway, in poor weather conditions without recourse to mooring. This is achieved by a dynamic positioning system.
Under poor weather conditions, with the ESV subject to pitch, roll, yaw, heave, sway and surge, the deployment of a conventional ~a2SqJ'~6 gangway and its positioning on the platform is a difficult and sometimes impossible undertaking. Movement of the ESV due to rolling is magnified at the end of the gangway and the possibility of the gangway making a violent impact with the platform and damaging itself and possibly the platform is a very real one.
We have now devised an emergency gangway capable of being deployed from an ESV and being landed safely on an offshore platform in gale force conditions, despite movements of the vessel relative to the platform.
Thu~ according to the present invention there is provided a telescopically extendable gangway comprising:
(a) a first section pivotally and rotatably mounted on a support vessel, (b) a second section telescoping within the first, (c) a servo-mechanism for controlling the extension of the second section of the gangway, (d) a servo-mechanism for controlling the elevation of the gangway, (e) a servo-mechanism for controlling the slew of the gangway and ~f) stabilising means for stabilising the end of the gangway in ~0 space.
The gangway may additionally comprise (g) a relatively short third section connected to the remote end of the second section in such manner that in use the third section slopes downwardly from the second section.
The connection between the second and third sections may be rigid, in which case the second and third sections are permanently offset, or pivoted, in which case they may be aligned for better storage when not in use, and more flexibly deployed when in use.
The third section reduces the magnitude of the impact load during deployment since its mass is small.
The angle between ~he second and third sections in use ~s governed by the maximum safe slope for carrying stretcher-borne casualties. A typical value lies between 25 and 30.
Landing can be on an area of the platform which is above the level of the base of the gangway. It is preferred, however, to l~S~
employ the gangway in an approximately horizontal position from the ESV to a specially designed and positioned landing area on the platform.
Accelerometer based sensors and compensators provlde suitable stabilising means. The sensors continuously monitor deviations from the last known position and the compensators take restorative action.
The landing tip of the gangway preferably comprises landing wheels which on contact actuate the servo mechanism controlling the telescoping of the gangway so that it may compensate for changes in distance between the base of the gangway and the landing area on the platform caused by relative motion between the ESV and the platform.
It is envisaged that the operation of the gangway will be implemented manually by one operator with stabilising assistance provided by the gangway control system. This allows maximum flexibility of operation to cater for unforeseen circumstances whilst also being well within the limitations of one man's capabilities.
The elevation and slew servos are capable of opera~ing in the following modes:-(a) Unstabilised (b) Space stabilised (c) Idle.
The unstabilised mode has two functions. Firstly, when moving the gangway from the stowed position on the ESV, the gangway should be driven relative to deck. This will avoid any possible collisions due to deck motions if the gangway were stabilised in space. When the gangway is safely ou~board of the vessel structure, the stabilised mode can be selected.
The principle of the space stabilised scheme means that over a sensible limited period of time~ the elevation and slew motions of the gangway will be space stabilised. The extension motlon of the gangway during deployment remains a manual operation, since expected short-term excursions in this direction are within ~ 1 ~etre.
The extension systèm i5 therefore capable of operating only in two modes, namely:-~ZS~ 6 (a) manual - (b) automatic.
In "manual", the extension of the gangway is manually controlled by the operator at the gangway control console. In the "automatic" mode, the gangway extension is controlled automatically once successfully deployed on the platform.
When the elevation and slew servos are in the "idle" mode, a preset pressure will be maintained across the elevation ra~s or motors thus countering any net out of balance whilst also ensuring the hydraulics are free to move in sympathy with the gangway.
During gangway deployment, the operator will position the gangway ln elevation and slew so that the gangway is pointing at the platform. He will then leave this motion alone while the gangway control system maintains the end point approximately stable in space.
During this period, the operator is then free to concentrate on manually extending the gangway to the re~uired position before lowerlng the tip and finally locking it in the drooped position.
Once the gangway tip is lowered and locked in position, the operator may switch the elevation and slew systems to "idle" and the extension system to "auto".
From an operational viewpoint, it is preferred that droop snoot can be locked in any position with respect to the gangway. This allows for easier and more flexible operation than if discrete locking positions are used.
In this mode the ESV gangway wlll automatically extend and shorten, due to ESV motions9 to maintain the end point stationary on the platform.
If the operator wishes to modify the position of the end point on the platform, he can switch the extension system to manual, reposition the end point with the ~oystick and then revert to "auto". The gangway end point will then be maintained at this new position. This ad~usting operation can be performed with the slew and elevation systems remaining in idlen.
To return the gangway from the deployed to the stowed position, `-- 12S~7~36 the elevation and slew servos will be returned to the "stabilised"
mode, the extension system returned to manual, and the tlp will be lifted off the platform. The operator will then move the gangway towards the stowed position and final stowage will be implemented with the elevation and slew servo in the "unstabilised" mode.
The previous operation assumes that, after deployment, the gangway rests on the rig with both elevation and slew servos in the idle mode. This concept results in inertial forces due to the ESV base motion being transmitted to the platform. These forces can be reduced by incorporating a suspension system on the end of the gangway which results in relative motion between the gangway and platform as energy is absorbed.
An alternative configuration is a stabilised gangway wrist with the angled tip being allowed to rest freely on the platform.
This configuration reduces the loads on the landing.
The invention is illustrated with reference to Figures 1-5 of the accompanying drawings wherein Figure l is an elevation of the gangway with the telescopic section fully retracted, Figure 2 is an elevation with the telescopic section fully extended9 Figure 3 is a plan view with the telescopic section partially extended, Figure 4 is an elevat~on showing the gangway in two different positions and Figure 5 is a schematic diagram of the control systems.
With reference to Figures 1-4, the gangway is rotatably and pivotably mounted on a slewing base l. The gangway comprises an inboard section 2, a telescopic section 3 and a "droop snoot" 4.
Operation is controlled from a cabin 5.
Section 3 is extended by means of a drive winch 6 and assoclated wires and sheaves.
The droop snoot 4 is pivoted to the telescopic section 3 at 7 and hydraulic rams 8 control the desired configuration. A landing wheel assembly 9 is fitted to the tip of the snoot.
The gangway extends from a stowed length of 25 m to a maximum of 43 m and is approximately 0.6 m wide. It is constructed from lightweight hollow steel sections.
Figure 4 shows the gangway at rest in the horizontal posi~ion.
~LZSa)'7~6 The Figure also shows the inboard section 2 in the elevated position, the other sections being omitted for reasons of clarity.
A short flight of steps lO leads down from the gangway to the deck 11 of the ESV.
With reference to Figure 5.
Additionally shown are a slew motor and gearbox assembly 12 for slewing the base 1, and hydraulic cylinders 13 for elevating the gangway.
A position stabilising accelerometer pack 14 is fitted to the inboard section 2 of the gangway.
TV cameras 15 for viewing tip motion are fitted at the end oE
the droop snoot 4.
A hydraulic powerpack 16 supplies hydraulic fluid to the various units and signals a.e relayed to a control console 17 containing servo processing and power supplies 18 and video screens 19 as follows:
Signal Description Function -21 Gangway Wheel Rig Position Measures rotation of wheels Sensor which indicates the need to telescope and actuate tele-scoping servo 22 Systems Landed Interlock Detects gangway landing from axle load on wheels 23 Accelerometer Signals Velocity feedback on elevation ' 25 24 DP Transducer Telescopic extension limiting - hydraullc pressure feedback signal 25 Servo Valve Spool Posi~ion Feedback of telescoping velocity 26 Ser~o Valve Signal Telescoping control command 27 Blocking Valve Signal Stops gangway telescoping on loss of hydraulic pressureO
Locks hydraulic supply line ~ ` 12~1'7(~6 Signal Description Function 28 Tacho Feedback on velocity of telescoping 29 Elevation Inertial Signals Feedback on angle o~ elevation Tacho Feedback on rate of change of aDgle of elevation 31 Tacho Feedback on rate of change of angle of slew 32 Blocking Valve Signal Stops gangway slewing on loss of hydraulic pressure. Locks hydraulic supply line 33 Servo Valve Signal Slew control command 34 DP Transducer Slew limiting hydraulic pressure feedback signal 35 Servo Valve Spool Position Slew velocity feedback 36 Servo Valve Signal Elevation control command 37 Blocking Valve Signal Stops gangway elevation on 108s of hydraulic pressure. Locks hydraulic supply line 38 DP Transducer Elevation limiting hydraulic pressure feedback signal 39 Servo Valve Signal Elevation control command Slew Reference Data Inertial slew reference in space 41 Powerpack Tellbacks Warning in case of malfunction 42 Powerpack Control Signals Powerpack control
_ .
This invention relates to an emergency escape gangway suitable for installation on an emergency support vessel.
In recent years the number of offshore oil production platforms has grown considerably, particularly in waters which are exposed to severe climatic conditions such as the North Sea where gale force winds and temperatures below free~ing are not infrequent. Provision must always be made for emergencies which requtre the rapid evacuation of these platfonms.
In extreme conditions, traditional means of escape such as lifeboats or escape chutes are occasionally inoperative, often hazardous and æometimes leave victims immersed ln the sea or under exposed conditions for undesirably long periods of time, with possibly fatal results.
For this reason an emergency support vessel (ESV) has been built and is permanently on-station in the North Sea in the vicinity of a group of production platforms. This vessel has both emergency and support roles. One of its emergency roles is to provide a rescue and lifesaving facility to a stricken offshore installation by enabling direct evacuation of personnel by means of a gangway.
The vessel is designed to keep station bo~h in the vicinity of a platform or close ~o it9 linked by ~he gangway, in poor weather conditions without recourse to mooring. This is achieved by a dynamic positioning system.
Under poor weather conditions, with the ESV subject to pitch, roll, yaw, heave, sway and surge, the deployment of a conventional ~a2SqJ'~6 gangway and its positioning on the platform is a difficult and sometimes impossible undertaking. Movement of the ESV due to rolling is magnified at the end of the gangway and the possibility of the gangway making a violent impact with the platform and damaging itself and possibly the platform is a very real one.
We have now devised an emergency gangway capable of being deployed from an ESV and being landed safely on an offshore platform in gale force conditions, despite movements of the vessel relative to the platform.
Thu~ according to the present invention there is provided a telescopically extendable gangway comprising:
(a) a first section pivotally and rotatably mounted on a support vessel, (b) a second section telescoping within the first, (c) a servo-mechanism for controlling the extension of the second section of the gangway, (d) a servo-mechanism for controlling the elevation of the gangway, (e) a servo-mechanism for controlling the slew of the gangway and ~f) stabilising means for stabilising the end of the gangway in ~0 space.
The gangway may additionally comprise (g) a relatively short third section connected to the remote end of the second section in such manner that in use the third section slopes downwardly from the second section.
The connection between the second and third sections may be rigid, in which case the second and third sections are permanently offset, or pivoted, in which case they may be aligned for better storage when not in use, and more flexibly deployed when in use.
The third section reduces the magnitude of the impact load during deployment since its mass is small.
The angle between ~he second and third sections in use ~s governed by the maximum safe slope for carrying stretcher-borne casualties. A typical value lies between 25 and 30.
Landing can be on an area of the platform which is above the level of the base of the gangway. It is preferred, however, to l~S~
employ the gangway in an approximately horizontal position from the ESV to a specially designed and positioned landing area on the platform.
Accelerometer based sensors and compensators provlde suitable stabilising means. The sensors continuously monitor deviations from the last known position and the compensators take restorative action.
The landing tip of the gangway preferably comprises landing wheels which on contact actuate the servo mechanism controlling the telescoping of the gangway so that it may compensate for changes in distance between the base of the gangway and the landing area on the platform caused by relative motion between the ESV and the platform.
It is envisaged that the operation of the gangway will be implemented manually by one operator with stabilising assistance provided by the gangway control system. This allows maximum flexibility of operation to cater for unforeseen circumstances whilst also being well within the limitations of one man's capabilities.
The elevation and slew servos are capable of opera~ing in the following modes:-(a) Unstabilised (b) Space stabilised (c) Idle.
The unstabilised mode has two functions. Firstly, when moving the gangway from the stowed position on the ESV, the gangway should be driven relative to deck. This will avoid any possible collisions due to deck motions if the gangway were stabilised in space. When the gangway is safely ou~board of the vessel structure, the stabilised mode can be selected.
The principle of the space stabilised scheme means that over a sensible limited period of time~ the elevation and slew motions of the gangway will be space stabilised. The extension motlon of the gangway during deployment remains a manual operation, since expected short-term excursions in this direction are within ~ 1 ~etre.
The extension systèm i5 therefore capable of operating only in two modes, namely:-~ZS~ 6 (a) manual - (b) automatic.
In "manual", the extension of the gangway is manually controlled by the operator at the gangway control console. In the "automatic" mode, the gangway extension is controlled automatically once successfully deployed on the platform.
When the elevation and slew servos are in the "idle" mode, a preset pressure will be maintained across the elevation ra~s or motors thus countering any net out of balance whilst also ensuring the hydraulics are free to move in sympathy with the gangway.
During gangway deployment, the operator will position the gangway ln elevation and slew so that the gangway is pointing at the platform. He will then leave this motion alone while the gangway control system maintains the end point approximately stable in space.
During this period, the operator is then free to concentrate on manually extending the gangway to the re~uired position before lowerlng the tip and finally locking it in the drooped position.
Once the gangway tip is lowered and locked in position, the operator may switch the elevation and slew systems to "idle" and the extension system to "auto".
From an operational viewpoint, it is preferred that droop snoot can be locked in any position with respect to the gangway. This allows for easier and more flexible operation than if discrete locking positions are used.
In this mode the ESV gangway wlll automatically extend and shorten, due to ESV motions9 to maintain the end point stationary on the platform.
If the operator wishes to modify the position of the end point on the platform, he can switch the extension system to manual, reposition the end point with the ~oystick and then revert to "auto". The gangway end point will then be maintained at this new position. This ad~usting operation can be performed with the slew and elevation systems remaining in idlen.
To return the gangway from the deployed to the stowed position, `-- 12S~7~36 the elevation and slew servos will be returned to the "stabilised"
mode, the extension system returned to manual, and the tlp will be lifted off the platform. The operator will then move the gangway towards the stowed position and final stowage will be implemented with the elevation and slew servo in the "unstabilised" mode.
The previous operation assumes that, after deployment, the gangway rests on the rig with both elevation and slew servos in the idle mode. This concept results in inertial forces due to the ESV base motion being transmitted to the platform. These forces can be reduced by incorporating a suspension system on the end of the gangway which results in relative motion between the gangway and platform as energy is absorbed.
An alternative configuration is a stabilised gangway wrist with the angled tip being allowed to rest freely on the platform.
This configuration reduces the loads on the landing.
The invention is illustrated with reference to Figures 1-5 of the accompanying drawings wherein Figure l is an elevation of the gangway with the telescopic section fully retracted, Figure 2 is an elevation with the telescopic section fully extended9 Figure 3 is a plan view with the telescopic section partially extended, Figure 4 is an elevat~on showing the gangway in two different positions and Figure 5 is a schematic diagram of the control systems.
With reference to Figures 1-4, the gangway is rotatably and pivotably mounted on a slewing base l. The gangway comprises an inboard section 2, a telescopic section 3 and a "droop snoot" 4.
Operation is controlled from a cabin 5.
Section 3 is extended by means of a drive winch 6 and assoclated wires and sheaves.
The droop snoot 4 is pivoted to the telescopic section 3 at 7 and hydraulic rams 8 control the desired configuration. A landing wheel assembly 9 is fitted to the tip of the snoot.
The gangway extends from a stowed length of 25 m to a maximum of 43 m and is approximately 0.6 m wide. It is constructed from lightweight hollow steel sections.
Figure 4 shows the gangway at rest in the horizontal posi~ion.
~LZSa)'7~6 The Figure also shows the inboard section 2 in the elevated position, the other sections being omitted for reasons of clarity.
A short flight of steps lO leads down from the gangway to the deck 11 of the ESV.
With reference to Figure 5.
Additionally shown are a slew motor and gearbox assembly 12 for slewing the base 1, and hydraulic cylinders 13 for elevating the gangway.
A position stabilising accelerometer pack 14 is fitted to the inboard section 2 of the gangway.
TV cameras 15 for viewing tip motion are fitted at the end oE
the droop snoot 4.
A hydraulic powerpack 16 supplies hydraulic fluid to the various units and signals a.e relayed to a control console 17 containing servo processing and power supplies 18 and video screens 19 as follows:
Signal Description Function -21 Gangway Wheel Rig Position Measures rotation of wheels Sensor which indicates the need to telescope and actuate tele-scoping servo 22 Systems Landed Interlock Detects gangway landing from axle load on wheels 23 Accelerometer Signals Velocity feedback on elevation ' 25 24 DP Transducer Telescopic extension limiting - hydraullc pressure feedback signal 25 Servo Valve Spool Posi~ion Feedback of telescoping velocity 26 Ser~o Valve Signal Telescoping control command 27 Blocking Valve Signal Stops gangway telescoping on loss of hydraulic pressureO
Locks hydraulic supply line ~ ` 12~1'7(~6 Signal Description Function 28 Tacho Feedback on velocity of telescoping 29 Elevation Inertial Signals Feedback on angle o~ elevation Tacho Feedback on rate of change of aDgle of elevation 31 Tacho Feedback on rate of change of angle of slew 32 Blocking Valve Signal Stops gangway slewing on loss of hydraulic pressure. Locks hydraulic supply line 33 Servo Valve Signal Slew control command 34 DP Transducer Slew limiting hydraulic pressure feedback signal 35 Servo Valve Spool Position Slew velocity feedback 36 Servo Valve Signal Elevation control command 37 Blocking Valve Signal Stops gangway elevation on 108s of hydraulic pressure. Locks hydraulic supply line 38 DP Transducer Elevation limiting hydraulic pressure feedback signal 39 Servo Valve Signal Elevation control command Slew Reference Data Inertial slew reference in space 41 Powerpack Tellbacks Warning in case of malfunction 42 Powerpack Control Signals Powerpack control
Claims (5)
1. A telescopically extendable gangway comprising:
(a) a first section pivotally and rotatably mounted on a support vessel, (b) a second section telescoping within the first, (c) a servo-mechanism for controlling the extension of the second section of the gangway, (d) a servo-mechanism for controlling the elevation of the gangway, (e) a servo-mechanism for controlling the slew of the gangway and (f) stabilising means for stabilising the end of the gangway in space.
(a) a first section pivotally and rotatably mounted on a support vessel, (b) a second section telescoping within the first, (c) a servo-mechanism for controlling the extension of the second section of the gangway, (d) a servo-mechanism for controlling the elevation of the gangway, (e) a servo-mechanism for controlling the slew of the gangway and (f) stabilising means for stabilising the end of the gangway in space.
2. A gangway according to claim 1 comprising (g) a relatively short third section connected to the remote end of the second section in such manner that in use the third section slopes downwardly from the second section.
3. A gangway according to claim 2 wherein the second and third sections are pivoted.
4. A gangway according to claim 2 wherein the angle between the second and third sections in use is between 25° and 30°.
5. A gangway according to claim 1 wherein the stabilising means comprise accelerometer based sensors and compensators.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8430359 | 1984-11-30 | ||
| GB848430359A GB8430359D0 (en) | 1984-11-30 | 1984-11-30 | Emergency gangway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1250706A true CA1250706A (en) | 1989-03-07 |
Family
ID=10570544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000496154A Expired CA1250706A (en) | 1984-11-30 | 1985-11-25 | Emergency gangway |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA1250706A (en) |
| GB (2) | GB8430359D0 (en) |
| NO (1) | NO854792L (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2428656B (en) * | 2005-08-01 | 2009-08-05 | Engineering Business Ltd | Gangway apparatus |
| GB2434823A (en) | 2006-02-06 | 2007-08-08 | Engineering Business Ltd | Transport and installation of offshore structures |
| FR2937356A1 (en) * | 2008-10-22 | 2010-04-23 | Xavier Marie Lombard | Telescopic floor element i.e. telescopic extension, for e.g. scaffolding field, has end fixed with traction cable, where translational movement of element is actuated by hand winch that is actuated by dismountable handle |
| GB201019837D0 (en) * | 2010-11-23 | 2011-01-05 | Divex Ltd | Bridge apparatus |
| US9643690B2 (en) * | 2012-11-19 | 2017-05-09 | U-Sea Beheer B.V. | Transfer system, ship and method for transferring persons and/or goods to and/or from a floating ship |
| NO337483B1 (en) * | 2013-07-19 | 2016-04-18 | Icd Software As | Device and method for providing active motion compensation control of a joint gangway |
| NO20141527A1 (en) * | 2014-12-18 | 2016-04-18 | Marine Aluminium As | Control system and method for landing an end portion of a freely projecting, elongate element, as well as using an image processor to generate control parameters for the control system |
| CN106043606B (en) * | 2016-06-20 | 2018-05-29 | 山东省科学院海洋仪器仪表研究所 | A kind of adjustable gangway ladder |
| NO344974B1 (en) * | 2017-09-22 | 2020-08-10 | Kongsberg Maritime As | Smart Gangway Tip |
| CN108750021B (en) * | 2018-06-28 | 2020-12-08 | 中国船舶重工集团公司第七0四研究所 | Folding telescopic walking bridge device with wave compensation function |
| CN109080777B (en) * | 2018-08-28 | 2019-11-05 | 涡阳县信隆船舶附件有限公司 | A kind of deep sea drilling ship composite extendible gangway ladder |
| CN109969347B (en) * | 2019-03-15 | 2024-02-20 | 上海凌耀船舶工程有限公司 | Side boarding platform device |
-
1984
- 1984-11-30 GB GB848430359A patent/GB8430359D0/en active Pending
-
1985
- 1985-11-25 CA CA000496154A patent/CA1250706A/en not_active Expired
- 1985-11-25 GB GB08528949A patent/GB2167714B/en not_active Expired
- 1985-11-28 NO NO854792A patent/NO854792L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO854792L (en) | 1986-06-02 |
| GB8430359D0 (en) | 1985-01-09 |
| GB2167714B (en) | 1987-12-02 |
| GB8528949D0 (en) | 1986-01-02 |
| GB2167714A (en) | 1986-06-04 |
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