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  Saab Seaeye - Manufacturer of electric powered ROV systems
  Seaeye ROVs
• Comparison chart
• Falcon & Falcon DR
• Tiger
• Lynx
• Cougar-XT Compact
• Cougar-XT
• Cougar-XTi
• Panther-XT
• Panther-XT Plus
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  TMS Systems
• TMS2 (Tiger)
• TMS8 (all other
• TMS10 (Jaguar)
  LARS - ROV handling
• A-Frame LARS
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  ROV control cabins &
  workshop containers
  Seaeye accessories
• Seaeye thrusters
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  Saab Military ROVs
• Double Eagle
  (MCM System)
• Double Eagle SAROV
  (Hybrid AUV/ROV)
  (Submarine ROV)
• AUV62
  (Acoustic Target)
  Seaeye Hydro ROVs
• Falcon - dam
  inspection vehicle
• Sabertooth
  deep tunnel
  penetration vehicle

Seaeye Bale Arm TMS Systems

Tiger in Type 2 TMS   Puma in Type 4 TMS

Seaeye offer a choice of TMS systems including a range of lower cost Bale Arm Systems and the more capable Winch and Slip Ring systems. This page describes our range of Bale Arm systems.

The benefits of a bale arm system include:

  • Lower cost
  • Simple design
  • No slip ring required
  • Low maintenance

A Seaeye bale arm TMS comprises a side entry garage configured to accommodate the size of vehicle installed. A detachable top section contains the tether management mechanism and controls. The tether is stored on a polypropylene bobbin with a bale arm mechanism to spool the tether evenly onto and off the bobbin. The bale arm is powered by a Seaeye SM4 thruster motor which is connected to the bale arm reduction gearbox by a hard rubber universal coupling. The control electronics are contained in a one atmosphere, hard anodised, pressure housing and all connectors are Seaeye metal shell type.

The garage is lowered to the working depth using contra-helically wound double armoured umbilical. This umbilical is mechanically terminated into a lifting device at the subsea end and electrically terminated at an oil filled, pressure compensated junction box. The umbilical is terminated on the surface into a slip ring fitted to the ROV lift winch.

A hydrostatic release mechanism ensures that the vehicle is held securely in the garage until it reaches a depth of 30 metres, safely below surface wave action.

At the working depth the ROV can be safely flown from the TMS to the extent of its tether. The pilot operates the TMS tether in and out mechanism from the hand controller as he manoeuvres the vehicle. The length of tether spooled out is displayed on the comprehensive video overlay provided as standard fit on all Seaeye ROVs. This is automatically calculated by the number of turns made by the bale arm mechanism during spooling in and out.

Three types of bale arm TMS are manufactured by Seaeye. The type 2 is used for the smaller vehicles, 600DT and TIGER with the type 3 for the SURVEYOR PLUS and PANTHER and the type 4 for the PUMA and LYNX.
The Type 4 bale arm TMS incorporates a level wind mechanism to improve tether spooling and increase the capacity of tether that can be accommodated on the bobbin.

Excursion Umbilical Used
Seaeye 600 DT Type 2 5601 140 metres ADU 3
Seaeye Tiger Type 2 5601 140 metres ADU 3
Seaeye Puma/Lynx Type 4 ROV 208 200 metres ADU 3
Seaeye Surveyor Plus Type 3A ROV 207 140 metres ADU 3
Seaeye Panther and
Panther Plus
Type 3 ROV 206 150 metres ADU 3

Panther Plus and a Type 3 TMS

TMS Specifications
Construction: Galvanised steel
Baling System: Polypropylene construction with hard anodised aluminium central boss. Seaeye SM4 motor drive with hard rubber universal coupling to bale arm gearbox.
Junction Box:
(Types 3 & 4)
Hard anodised, oil filled and pressure compensated providing a central termination point for the armoured umbilical, tether cable and TMS electronics pod.
Electronics Pod: Hard anodised aluminium cylinder with piston sealed ends. Seaeye metal shell connectors.

Dimensions: Type 2 Type 3
Length 1200 mm 1700 mm
Width 1200 mm 1400 mm
Height to lift eye 1640 mm 2250 mm
    Type 4: 1880 mm
Total Weight in air Approx 650 Kg* Approx 1400 Kg*
Depth Rating 1000 metres 1500 metres

*Includes base vehicle and tether cable.

Tether Types: 5601 ROV 207 ROV 208 ROV 206
O/D 17 mm 20.6 mm 17 mm 20.6 mm
Sheathing Polyurethane Polyurethane Polyurethane Polyurethane
Breaking strength 2000 Kg 1500 Kg 850 Kg 1500 Kg
Weight in air 340 Kg/Km 515Kg/Km 375 Kg/Km 520 Kg/Km
Weight in water 126 Kg/Km 170 Kg/Km 145 Kg/Km 175 Kg/Km
Min bend radius 230 mm 200 mm 200 mm 200 mm

Armoured Umbilical: ADU 3:
O/D 31 mm
Sheathing Contra-helically wound, double armoured
Breaking strength 24 tonnes
Weight in air 2770 Kg/Km
Weight in water 2040Kg/Km
Min Bend Radius 500 mm