Ship Handling

Question 1

Which MGN gives us guidance and information on the dangers of interaction?

Answer 1

MGN 199 - dangers of interaction

Question 2

In a narrow channel, would you experience more interaction in a head on meeting or overtaking another vessel?

Answer 2

Overtaking, because it takes longer to perform the manoeuvre.

Question 3

As master before leaving the dock what would you expect to do?

Answer 3

A risk assessment and toolbox talk.

Question 4

What’s the correct sequence to Turn Short Round?

Answer 4

For a right hand fixed propeller!
• Alter ships head to move to the port side of the channel.
• Dead slow ahead in engines and order helm hard to starboard.
• Stop engines, wheel midships.
• Full astern, wheel amidships, until the vessel gathers sternway, then stop engines. The transverse thrust would generate a tendency for the bow to move to starboard and the stern to port.
• wheel hard to starboard, engine full ahead.
• Repeat until pointing the correct way.

Question 5

What is shallow water affect?

Answer 5

Is when you are in shallow water and notice you are struggling to maintain course!
Anything less than 2x your boats draught, you may start to feel shallow water effects.

Question 6

What is the Bernoulli theory?

Answer 6

It shows that zones of high and low pressure are created around any body moving in a fluid or gas.

Question 7

What is transverse thrust effect?

Answer 7

Transverse thrust effects are a cause of the single propeller action where water is displaced to one side or another.

Question 8

Which MGN can we find manoeuvring information onboard ships?

Answer 8

MGN 301

Question 9

Steering gear checks, how many seconds from 35 degrees STBD to 35 degree’s to port?

Answer 9

Should be within 28 seconds

Question 10

Dangers of interaction!? MGN 199

Answer 10

Key points:
•Understand that sudden sheeting May occur when passing another vessel at close range.
• appreciate the need to reduce speed in narrow channels
• be aware of the dangerous effects on tugs when manoeuvring close to larger vessels.
• be aware that unexpected turning moments may result when stopping in shallow and confined basins
• appreciate the need to make appropriate allowances for squat
• note the results of lab work.

Question 11

What should you do when you come into shallow water?

Answer 11

• Slow down
• Test all equipment
• Be aware:
• that ships turning radius will increase, in shallow water, (depths of 1.2 times the vessels draft or less) the radius can be as much as double than experienced at sea.
• vessel twists more when backed
• trim of the ship changes
• rate of turn essentially the same as for deep water.
• Diameter of turning circle increases to as much as twice that of the deep water turn.
• Speed loss occur with large changes in heading, but to a lesser extent than in deep water.

Question 12

Running into Heavy weather, what options do you have?

Answer 12

• Head to sea, or with wind and sea fine on the bow, running at reduced Speed.
• Stern to sea, at a reduced speed, running before the wind.
• Heaving to, preferably in the lee of a land mass, to allow the weather to pass.
• Anchoring, depending on depth of water and shelter afforded.
• Altering course in plenty of time to take evasive action away from the adverse weather conditions.

Question 13

Embarking and disembarking a pilot?

Answer 13

Passage plan complete.
Updates to passage plan have been included.
Passage plan approved by master And Briefed to the bridge team.
Appropriate scale charts with updates.
Update ECDIS with current route plan

Check all nav equipment and engine room equipment.
• clocks synced 
• controllable pitch propeller controls and indicators 
• Steer gears and pumps
• ecdis
• compas
• gyro
• depth sounders
• engine & thrusters propulsion check
• mooring appliances working
• signalling equipment
• nav lights and shapes 
• GMDSS all on and working 

Before arrival
• anchors cleared away
• stabilised disengaged
• bridge team ready