MIRAI Instrument

Instrument > Others > Observation facilities

Aft wheelhouse

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The aft wheelhouse is located just above the No.1 buoy shed where overall viewing of the observation deck is possible. Control of many instruments, especially under the severe condition, on the observation deck is possible remotely in this room.

A-frame crane

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A-frame crane is used for deployment and recovery of large buoys, and for water sampling by large CTD system.

CTD crane winch system

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This system, consisted by crane with an heave compensetor, a traction winch and storage winch, is used for the control of the CTD water sampler, the clean water samplers and plankton nets. It adopts the greaseless coax.cable. Applicable rope : Kevlar rope, 9.53mm dia. x 10,000m length,breaking force more than 64.7kN Pull capacity : 44kN Line speed (pull/out) : 0 - 90m/min.

Clean water sampling winch

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This winch is used for light-work such as clean water sampling by go-flow water samplers, plankton nets, and memory CTD. Applicable rope : Kevlar rope, 6mm dia. x 2,000m length, tensible strength more than 11.8kN Pull capacity x line speed : 8.8kN x 0 - 54m/min (first layer), 4.9kN x 0 - 90m/min. (outermost layer)

Piston corer winch

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This winch, in combination with No.1 traction winch and the swell compensator, is used for the operation of piston corer sampler. Applicable cable : parallel wire rope, 17mm dia. x 12,000m length, breaking force more than 237kN Pull capacity : 10kN(first layer), 6kN(30th layer) Line speed(pull/out) : 0 - 90m/min

6,000m class winch

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This winch, in combination with No.2 traction winch and the swell compensator, is used for the measuring instrument with greaseless electro-optical composite cable. Applicable cable : Electro-optical composite cable, 17mm dia. x 8,000m length, breaking force more than 147kN Pull capacity : 10kN(first layer), 7kN(25th layer) Line speed(pull/out) : 0 - 90m/min

Large CTD winch

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This winch, in combination with No.3 traction winch and the swell compensator, is used for the operation of large CTD water sampling system with greaseless coax. cable. Applicable cable : parallel wire rope, 17mm dia. x 9,500m length, breaking force more than 147kN Pull capacity : 10kN(first layer), 7kN(26th layer) Line speed(pull/out) : 0 - 90m/min

Traction winch

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Traction winches are used in combination with large size observation winches. The specification of them as follows; No.1 traction winch for piston corer : 137kN x 0 - 90m/min No.2 traction winch for 6,000m towed vehicle : 98kN x 0 - 90m/min No.3 traction winch for large CTD system : 118kN x 0 - 90m/min

Low temperature laboratory

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Ice samples collected in polar area are analyzed in this room. The room temperature is kept below -30 degrees-C, following equipments are installed; an ice core cutter, a polarization analyzer for observation of ice crystal structures.