Dive Leader Knowledge: DT10 - Helicopter operations

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* 1. Which of the following should you expect when a rescue helicopter is hovering above you? Please select all that apply.

Spray

Strong downdraft

Loud noise

Heat blast

Intense lights

Static electricity

Exhaust fumes

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* 2. In what manner should the boat from which a casualty is to be lifted be driven, subject to the instructions of the helicopter crew?

Directly into the wind

In a right-handed circle

At a constant speed and heading

The boat should be stationary

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* 3. By what method should you communicate with the helicopter crew as they approach?

By radio

By hand signals

By semaphore

By Aldis lamp or torch, using Morse code.

By mobile phone

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* 4. By what method should you communicate with the helicopter crew when the aircraft is overhead?

Radio

Hand signals with winchman/winch operator

Light signals

Signal flags

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* 5. Why is the preferred heading for the casualty's boat 20 to 40 degrees to the right of the wind?

Heading into the wind at this angle is the most comfortable course for the casualty

It isn't. The preferred heading is with the wind 20 to 40 degrees off the port bow.

So that the helicopter can fly directly into the wind while giving the pilot and winchman a good view of the boat from their positions on the starboard side of the aircraft.

So that the helicopter can fly directly into the wind while giving the pilot and winch crew a good view of the boat from their positions on the port side of the aircraft.

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* 6. What should you do before handling any object, such as a line or person, lowered to you from a helicopter?

Put gloves on

Ask the Rescue Manager for permission

Ask the helicopter crew for permission

Let the object earth itself

Earth yourself

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* 7. What lifting technique is used for helicopter rescue from a small boat?

Direct lift

High-line

Small boat technique

It depends on the prevailing conditions

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* 8. Which of the following statements about high-line transfer are correct? Please select all that apply.

High-line transfers are used where there are no obstructions to winching

The light line should be made fast on the boat once the winchman is aboard the boat

The helicopter winches the load up and down off to one side of the boat

The helicopter winches the load up and down directly above the boat

The light line is used to guide the load onto the deck, without pulling strongly

The light line is used to heave the load aboard by pulling hard on it

You should release the high-line as soon as the winchman and casualty are aboard the helicopter

You should release the high-line once the winchman and casualty are aboard the helicopter and you have been signalled to do so