Tiger 'TigerShark' Sub-sea (Under water) Ultra Safe Lever Hoist - Range from 800kg to 10,000kg
Model: TigerShark / SSLH-2658
Lever Hoist Designed for Sub Sea Under Water Use though probably the safest choice for heavy industrial use!
The TigerShark lever hoist has now been superseded by a newer model, the Tiger SS11 Subsea Lever Hoist.
The design features of the TigerShark subsea lever hoist were developed in response to subsea industry concerns with regards to periodic lever hoist failure that could not be replicated when subsequent investigations took place. The additional design features have been added to enhance the safe use of the hoist in the subsea environment and are listed below:
- The unique dual break mechanism automatically engages when the lever hoist feels the slightest resistance. While the hoist is under even the lightest load and the mechanism is engaged if the change lever is moved to the neutral position no free movement of the chain can occur as the brake will remain active.
- Adjustable travelling end stop are fitted to all TigerShark Lever Hoists. Before the load is lowered position the travelling end stop to just below the body of the hoist. If a failure occurs for any reason and the chain starts to run through the hoist this will act as a manual stop.
- Critical components within the hoist are Kylan coated to combat corrosion
- High Grade Grease is used passing ASTM D 1743 bearing corrosion tests, vigorous salt spray and salt water soak tests at 4,000 hrs.
These design features we feel enhance the hoist and make it the mostsuitable hoist for the subsea environment
Lever Hoist specifically designed for subsea (marine) use.
Meets and exceeds latest imca do28 rev 1 guidance on the use of chain lever hoists in the offshore subsea environment and certified to BSEN 13157.
All our Tigershark lever hoists are supplied with the travelling clutch and end stop as standard.
Key new features
- Dual brake mechanism.
To safeguard against any light load failures with a guaranteed 2% light load test. - Kylan coating.
Excellent anti-corrosive properties. - Friction discs
Specifically designed for sub-sea use. - Improved body design
To reduce the possibility of contamination to the brake area. - Redesigned side plates.
Complete with wheelside gasket to reduce the ingress of subsea contamination. - High grade grease.
With over 4000 hours salt spray life and the salt water soak life test. - Ergonomically designed handle.
Which makes subsea use much more user friendly to the diver. - Anti overload lever handle
- Distinctive colourings
To aid safe use and ROV filming Distinctive filming - Supplied as standard with a 3 metre H.O.L Grade 100 load chain
- Adjustable Travelling chain end stop
In accordance with latest IMCA guidance notes D 028 Rev 1 Feb 2008 Note 7.2. - Guaranteed light load tests to 2% of SWL
- Stainless steel hardware used throughout.
- Grade 100 load chain.
Brake Design
The new brake design has been brought in so the diver must make a conscious decision to make two movements to place the hoist into the traditional neutral position, whilst retaining the ability to position a load using a free wheel device.
The reason for this is that in the past there have been reported failure modes when the diver has placed the hoist in neutral whilst Sub Sub-sea, these failures have never been able to be repeated at the surface, but the agreed general perception has been that these failures have been caused because of a light load failure.
Key Design Changes
The key design changes within the brake mechanism allow for the following.
The hoist will treat even the lightest resistance as a load, the benefits of this are that once the secondary brake lever leaves the neutral position it now becomes impossible for a light load failure to occur.
To get the hoist back to “Traditional neutral” the operator must now perform the secondary task of placing the 2nd brake lever into neutral.
Even with a load weighing just 2% of the S.W.L the operator will feel that he is holding the load with his hand, however as soon as he lets go, be that through choice or distraction the new mechanism will automatically take up the load making the Tigershark an inherently safer hoist to operate in the extreme conditions found offshore.
Neutral and Freewheel Positions
 |
These pictures show the Tigershark in the full neutral position on the left and the position the new Freewheel switch takes up when there has been a load applied on the right. |  |
New Brake Mechanism
To support the new brake mechanism the friction discs have been specifically re-designed for Sub-sea use as well.
These design changes include grooved friction discs that allow water to be displaced from the friction area quickly when the hoist is operated at depth. This will also negate the “Aquaplaning effect” that has been heavily discussed in the past.
The friction discs have also been bonded to the ratchet gear to reduce the amount of friction surface area that can become contaminated by outside elements and reduce brake efficiency.
Side Plates
The design and tooling of the side plates has been dramatically changed to increase the tolerances in the tooling areas so that the chain stripper is a tighter fit and the pawl springs are now held in position without coming through a hole in the side plate.
Coupled with this the inclusion of a gasket on the wheel side plate has greatly reduced the possibility of sub sea contamination within the critical area inside the hoist body.
High Grade Grease
Kylan Coating
Kylan Coating has been applied to various key components within the hoist, these include the Pinion shaft, disc brake, ratchet gear, pawls and the change gear.
These important parts will also be included in our service kit which will include amongst other components a new gasket and a sachet of replacement grease.
This will enable our distributors to service and maintain the Tigershark to the very high standards that guarantee such an efficient and safe hoist.
The Tiger Shark Handle
The Tigershark handle is ergonomically designed to aid the operator’s use, whilst also acting as an overload device by not allowing extension bars such as scaffold tubes to be fitted over the end.
Design Process
By working closely with the sub sea operators throughout the design process, it was decided that the finished colourings of white body and bright green top and bottom hooks would be the best combination for both safety and video playback analysis when lifts are recorded from an R.O.V Tigershark hoists will come fitted as standard with a three metre height of lift grade 100 bright zinc plated load chain.
Stainless steel fittings have been used on all the hardware throughout the Tigershark and the service and maintenance benefits of this will be seen throughout the hoists long service life.
Fail Safe
Finally in the unlikely event of a single point failure as discussed in the latest IMCA guidance on “The Use of Chain Lever Hoists in the Offshore Environment D 028 Rev.1 Feb 2008 2008” note 7.2 the travelling chain end stop is the ultimate fail safe feature offering complete confidence to the operator.TigerShark Technical Specifications
| Capacity | Standard lift - m (ft) | Test load - kg (lbs) | Pull on lever to lift full load - kg (lbs) | Load chain dia. - mm (inch) | N° of chain falls | Net weight - kg (lbs) | Gross weight - kg (lbs) |
| 750kg | 1.5 (4.92) | 1125 (2475) | 22 (48.4) | 6.3 (0.248) | 1 | 6.9 (15.18) | 7.38 (16.24) |
| 1000kg | 1.5 (4.92) | 1500 (3300) | 29 (63.8) | 6.3 (0.248) | 1 | 7.2 (15.84) | 7.68 (16.9) |
| 1500kg | 1.5 (4.92) | 2250 (4950) | 26 (57.2) | 7.1 (0.28) | 1 | 10 (22) | 10.75 (23.65) |
| 3000kg | 1.5 (4.92) | 4500 (9900) | 38 (83.6) | 10 (0.394) | 1 | 17.7 (38.94) | 18.85 (41.47) |
| 6000kg | 1.5 (4.92) | 9000 (19800) | 40 (88) | 10 (0.394) | 2 | 28.1 (61.82) | 30.1 (66.22) |
| 10000kg | 3 (9.84) | 15000 (33069) |
- | 10 (0.394) | 3 | 56 (123.46) |
- |
 |
 |
| 750kg to 3000kg Tiger Shark Dimensional Drawing | 6000kg and 10000kg Tiger Shark Dimensional Drawing |
Dimensions
| Capacity | A - mm (inch) | B - mm (inch) | C - mm (inch) | D - mm (inch) | E - mm (inch) | F - mm (inch) | F1 - mm (inch) |
| 750kg | 128 (5.04) | 240 (9.45) | 275 10.8 | 158 (6.22) | 99 (3.90) | 30 (1.18) | 26 (1.02) |
| 1000kg | 128 (5.04) | 240 (9.45) | 295 (11.61) | 158 (6.22) | 99 (3.90) | 34 (1.34) | 30 (1.18) |
| 1500kg | 154 (6.06) | 360 (14.17) | 320 (12.60) | 172 (6.77) | 104 (4.09) | 38 (1.50) | 34 (1.34) |
| 3000kg | 182 (7.17) | 360 (14.17) | 400 (15.75) | 195 (7.68) | 108 (4.25) | 43 (1.69) | 38 (1.50) |
| 6000kg | 242 (9.53) | 360 (14.17) | 570 (22.44) | 195 (7.68) | 108 (4.25) | 57 (2.24) | 52 (2.05) |
| 10000kg | 370 (14.57) |
360 (14.17) | 630 (24.80) | 195 (7.68) | 108 (4.25) | 71 (2.76) |
56 (2.21) |
Instruction Guide
This document is issued in accordance with the requirements of IMCA Guidance note D 028 Rev1 “The Use of Chain Lever Hoists in the Offshore Environment”. and LEEA document 033 which covers Lever hoists used Sub Sea.
Tigershark hoists meet and exceed the requirements of the above document; there are many changes to this hoist that enable it to be used safely in the Sub-sea environment, all operators must undergo training before they operate the hoist.
The Tigershark also complies fully with BS EN 13157 and is therefore suitable for topside applications.
Instruction:
Free-wheeling:
The new Freewheel switch in conjunction with the unique dual brake mechanism enables free movement of the load chain, whilst preventing light load slip and accidental load release. Below is a basic introduction as to how the free wheel and travelling chain end stop operates.
A. To make slight adjustments to the chain, position the change lever in the central position as Fig 1 and turn the grip ring clockwise for up and counter clockwise for down.
B. For major adjustments set the change lever to neutral and then point the Free wheel switch to the marks on the grip ring as in Fig 2, the chain can now be moved freely in either direction.
C. Then move the change lever switch to the desired direction up or down and operate the handle back and forth as in Fig 3 & 4.
Adjustable Chain End Stop:
IMCA Guidance note D 028 Rev1 section 7 Use of Chain hoists Underwater
Specifically point 7.2 Use of Static Rigging or Multiple Rigging points to avoid Single Point Failure.
Good Practice: It is always advisable to first raise a load before starting to lower when you are unsure of how long the lift has been in position.
ALWAYS:
- Store and handle lever hoists correctly.
- Inspect lever hoists and accessories before use and before placing into storage.
- Ensure any support fits freely into the seat of the hook and does not exert a side thrust on the point.
- Check the operation of the brake.
- Check that the bottom hook will reach its lowest point without running the chain against the stop.
- Adopt safe slinging practices and follow the instructions for the safe use of the equipment used.
NEVER:
- Expose lever hoists to chemicals, particularly acids, without consulting the supplier.
- Replace the load chain with a longer one without consulting the supplier.
- Extend the lever or use undue effort to force the lever hoist to operate.
- Throw, drop or drag a lever hoist.
- Allow oil or grease to come into contact with the brake.
Selecting the Correct Tigershark Lever Hoist
Tigershark Lever hoists are available in a range of capacities. Select the lever hoist to be used and plan the lift taking the following into account:Capacity: Use the hoist whose capacity is nearest but greater than the intended lift.
Range: Select the hoist with the correct amount of load chain or as close as possible to the amount needed to perform the lift.
Tigershark hoists are designed for use at any attitude and may be used both for lifting and pulling applications.
Consult the supplier if the lever hoist is to be used in areas of high risk, with hazardous substances, eg acids or chemicals, or subjected to extremes of temperature.
Storing and Handling Tigershark Lever Hoists
- Never return damaged Tigershark’s to storage. They should be stored dry, clean and protected from corrosion.
- Store lever hoists hung from the suspension hook with the chains raised clear of the ground.
- Lever hoists should not be dropped, thrown or dragged across the floor.
- Never galvanise or subject the chain, or other load bearing parts, to any other plating process without the express approval of the supplier.
Installing and Commissioning
Follow any specific installation instructions issued by the supplier and the general requirements given overleaf. Try the Tigershark hoist to ensure that it operates correctly and that the brake is effective. Ensure the chain is not twisted and the travelling chain end stop is fitted correctly.Using Tigershark Lever Hoists Safely
- Do not attempt lifting operations unless you understand the use of the equipment and the slinging procedures.
- Do not use defective Tigershark hoists or accessories.
- Check the slinging arrangement ensuring that the Tigershark is safely rigged and that chains are not twisted. Do not use the load chain as a sling.
- Check the load is free to move before commencing and that any landing area has been prepared.
- Raise the load just clear, and then halt the lift to check the integrity of the lever hoist, slinging method etc.
- Do not extend the operating lever, eg with a tube, to force the hoist to operate.
- Do not allow loads to swing out of control.
- Keep fingers, toes etc clear when lowering loads.
In-service Inspection and Maintenance
Follow any specific maintenance instructions issued by the supplier but in particular keep load chains lubricated and free of debris. Check the operation of the brake. Brakes must be kept free of oil, grease etc. Never replace the load chain with a longer one without consulting the supplier.Regularly inspect the lever hoist and, in the event of the following defects, refer the hoist to a Competent Person for thorough examination: wear; damage to hooks and fittings; damage or distortion to travelling end stop; chains worn, bent, notched, stretched, cracked, corroded, do not hang freely, twisted or jump; load slips or will not lift; damaged hoist casing bent or cracked operating lever; illegible markings.
Thorough Examinations
In accordance with the Lifting Operations and Lifting Equipment Regulations a Through Examination of the equipment must be carried out by a Competent Person, at periods defined in the Regulations, and a Report of this examination must be kept on file.
Tigershark sub sea Hoist operating instructions
Comprehensive operating manual for the Tigershark hoist. This includes spare parts lists.(approx. 3.7Mb)
Exploded parts diagram
Break down of the Tiger Shark Lever Hoist and spare parts(approx. 0.2Mb)
Images are for display purposes only.
