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Shiphandling PowerPoint PPT Presentation


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Shiphandling. Bridge Watch Team. Bridge Equipment. Radio hand Sets/speakers Status Boards Chart Table Gyro repeaters Magnetic compass Radar repeaters Alarms/light panels, 1MC IC ciruits SCC - EOT/Helm or ITC/Helm. Backing 1/3 25 RPM 2/3 50 RPM FULL 100 RPM. Ahead 1/3025 RPM

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Shiphandling

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Shiphandling l.jpg

Shiphandling


Bridge watch team l.jpg

Bridge Watch Team


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Bridge Equipment

  • Radio hand Sets/speakers

  • Status Boards

  • Chart Table

  • Gyro repeaters

  • Magnetic compass

  • Radar repeaters

  • Alarms/light panels, 1MC

  • IC ciruits

  • SCC - EOT/Helm or ITC/Helm


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Backing

1/3 25 RPM

2/3 50 RPM

FULL 100 RPM

Ahead

1/3025 RPM

2/3 050 RPM

STD 075 RPM

FULL 100 RPM

FLK I 125 RPM

FLK II150 RPM

FLK III>150 RPM

Bells


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Bells

  • GT - Controlled by pitch and speed of the propellar

  • Diesel - controlled by speed

  • Steam - controlled by the speed + 12 kts


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Controllable Forces

  • Propellers -

    • single - turn clockwise

    • double-

      • STBD - clockwise

      • PORT - counter clockwise

  • Side Force - due to the rotation of the screw

    • none on a twin screw

    • will force in the direction of rotation. It is as if the screw is walking on the bottom


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Controllable Forces

  • Rudder - Usually behind the prop to maximize the thrust


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Uncontrollable Forces

  • Bernoulli’s

    • UNREP

      • suction

      • Bow and stern cushions

  • Shallow Water Effects

    • Pounding

    • Loss of rudder effectiveness

    • Sink due to bernoulli’s

    • Squat


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Uncontrollable Forces

  • Wind - bigger problem on a carrier

  • Current

  • Helmsman


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Definitions

  • Pivot Point - The point on the centerline about which the ship turns

    • forward

      • small - last frame of the bridge

      • big - forward of the bridge

    • Astern

      • stern of the ship


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Definitions

  • Turning circle - line scribed by the pivot point in 360 degree turn

    • Rudder

    • Speed - real slow and fast increase the diameter

  • Advance - the distance gained toward the original course

  • Transfer - the distance gained in the direction of the turn


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Definitions

  • Tactical Diameter - the amount of transfer made in 180 turn

    • Standard - std rudder and bell

    • Reduced - any speed and full rudder

  • Kick - swinging of the stern

  • Surge - the amount of forward motion while slowing to a slower speed.


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MOB

  • Pass word

  • Watch/float/smoke

  • Swing stern away

  • Select maneuver

  • 6+ blasts, oscar, red red pulsating

  • Notify company

  • Notify CO\XO

  • Man helo or boat (ready and make leeward)

  • Ensure CIC and top are doing their jobs

  • Musters


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Types of MOBs

  • Anderson

  • Racetrack

  • Williamson

  • Choice depends on time of day, ship, ships in company, sea state and water temp


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