Seaeye Type 6 TMS
with Subsea Winch & Slip Ring
|Type 6 TMS
||Seaeye Lynx and the Type 6 TMS
Seaeye offer the choice of a lower cost bale
arm or the more capable subsea winch and slip ring TMS systems.
This page describes the Type 6 TMS and its subsea winch and
slip ring mechanism. The TMS is manufactured for Seaeye and
supersedes the earlier Type 5 systems.
ADVANTAGES OF THE TYPE 6 TMS
- Longer ROV excursions from the TMS to provide greater
- Adjustable entry height to accommodate tooling skids
- Variable lift points to balance the TMS
- Fits all Seaeye ROVs (except Seaeye Panther Plus)
- Power pack motor common spare part with Seaeye SM4/M
- Manual latching for dead TMS recovery
- Auto ROV release on payout to minimise tether damage
- Compensator pressure gauges to monitor hydraulic pressure
- Optional TMS camera and light to assist vehicle entry
and view compensator pressure gauges
- Tilting drive sheave smoothes the path and reduces
stress on the tether
The garage design accommodates all Seaeye ROVs with the exception
of the Panther Plus for which a larger system is available.
It incorporates telescopic legs that are simply extended with
a 4 bolt adjustment to suit the ROV type or vary the height
for a vehicle fitted with a tooling skid. The frame is designed
to accommodate an optional ballast skid into which lead ingots
can be added to increase the total weight of the TMS by 1310
kg. This may be an attractive option for operations in areas
with extreme currents.
The bell mouth entry guides, garage base facings
and internal guide runners are high density polypropylene
for smooth entry and exit of the ROV. The same material is
used for external bumper protection.
For safety, mesh doors are fitted on all sides
of the top deck. They can be easily removed for maintenance
and access to the top deck components.
The frame is designed to DNV codes and each is tested to
its full design load.
The Winch Drive and Spooling Mechanism
The winch and sheave wheel are driven by hydraulic motors
with power supplied by a 1.1 shp power pack comprising a Seaeye
SM4/M brushless DC thruster motor directly coupled to a hydraulic
The power pack is separately pressure compensated
over ambient pressure using a 2.75 litre hydraulic pressure
compensator and a gauge is provided within sight of the TMS
camera to monitor the pressure. A single solenoid valve provides
the flow to the motors that drive the winch drum or the sheave
wheel during heave in or pay out of the tether.
A direct chain drive from the winch drum motor
operates a diamond screw level wind that accurately controls
the transverse speed of the tether as it is spooled on and
off the drum.
The outboard side of the drive sheave is hinged
while the inboard end is connected to the level wind allowing
the sheave to tilt and follow the lead of the tether onto
the drum. This helps to eliminate twisting and minimise damage
to the tether.
A spring loaded, hydraulically operated, latch hook is provided
to latch the ROV and hold it within the garage. The latch
hook automatically releases the ROV when tether is paid out.
The spring loaded latch hook allows the ROV to be captured
in the event of a TMS system failure.
Slip Ring and Junction Boxes
The slip ring is installed in the hollow shaft of the winch
drum. The tether is terminated in the rotating junction box
which is fixed to the cheeks of the drum. The fixed junction
box into which the main lift umbilical is terminated is secured
to the garage frame. All are oil filled and pressure compensated
using a standard 2.75 litre compensator with pressure gauges
located within view of the TMS camera.
Both junction boxes have clear covers so that any water ingress
or air can be easily seen.
Control System and Electronics Pod
A single one atmosphere electronics pod contains the control
electronics, sensors and power supplies. The control electronics
use the same printed circuit boards as Seaeye ROV control
systems. It is the electronics pod that determines the depth
rating of the TMS which is 1500 MSW as standard with 3000
MSW available as an option.
| Depth Rating
|| 1500 MSW - 3000 MSW Option
| Safe Working Load
|| 2500 kg
| Design factor
| Design load
|| 7500 kg
|| 1680 mm
| Height without bullet -
| 1630 to 2130 mm (standard system)
1900 to 2400 mm (with ballast skid fitted)
|| Seaeye 600 DT
Seaeye Lynx and their tooling skids
Seaeye Surveyor Plus
|| 1270 mm
| Weight in air
|| 780 kg (standard system)
| Weight in air with
ballast skid option
| 850 kg
| Weight in water
|| 380 kg (standard system)
| Weight in water with
ballast skid option
| 410 kg
| Maximum added
| 1240 kg of lead ingots
| Tether capacity
|| 290 metres of 17 mm or 225 metres of 20.6 mm diameter
| Line pull
|| 61 kg on the bottom wrap
| Payout speed
|| 30 m/min
| Pull in speed
|| 25 m/min
| Design temperature
|| -20°C to 50°C
| TMS FRAME
|| To DNV codes
|| Aluminium 6082T6
| Side Protection and
Front entry bell mouth
| High density polypropylene (HDPE)
| ROV latching
|| Spring loaded snap hook with auto hydraulically operated
release on tether payout
| Front entry
|| 4 bolt adjustable opening height to accommodate ROV
with tooling skid
| Safety guards
|| Removable mesh doors on all sides of top deck.
| WINCH MODULE
|| Both the tether drum and sheave wheel are driven by
a single hydraulic motor via gear sprockets and chains.
The Tether is spooled evenly to and from the drum by a
diamond screw level wind mechanism.
| Drum Capacity
|| 290m of 17mm tether - 225m of 20.6mm tether.
| Drum Material
|| Aluminium and HDPE
| Slip Ring Mounting
|| Full bore drum core access
| Rotary Junction Box
|| Oil filled and compensated aluminium box attached to
drum cheek plate with full open access to connections.
| Tether Count
|| Magnet located on the drum activates a 'Reed switch'.
|| Hinged drive sheave following diamond level wind mechanism
| HYDRAULIC SYSTEM
| Hydraulic Power Pack
|| 1.1 shaft horse power gear pump directly coupled to
a Seaeye SM4 brushless DC thruster motor.
|| 250 Vdc +/- 10%
|| 4.5 amps, normal running
| Valve Pack
|| Single Solenoid Valve Pack
| Hydraulic motors
|| Danfoss OMM50 - compact, high torque
|| 2 x 2.75 Litre Compensators
| Pressure Relief Valves
|| 2 Line mounted valves
|| ISO 32 - Hydraulic Fluid
| ELECTRICAL SYSTEM
| Electronics Pod
|| 1500 MSW depth rated with 3000 MSW option.
Double 'O-Ring' sealing with vacuum test facility.
Common control PCBs to ROV system
| Junction Box
|| Hard anodised aluminium and oil compensated with elastomer
| SURFACE CONTROLS
|| Integrated with ROV Surface Control Unit.
| Tether Count
|| Tether measurement displayed on ROV video overlay
SPECIFICATIONS MAY CHANGE WITHOUT PRIOR NOTICE