Navigation Flashcards
What is a nautical chart?
A special-purpose map or book or a special compiled database from which such a map or book is derived
A nautical chart must be issued by a government approved office, often the military department.
What is the role of the IHO?
Established the regulation and specifications for nautical charts, including defined colours, abbreviations, and symbols.
What types of nautical charts are there?
- Paper charts
- Electronic Raster Charts
- Electronic Vector Charts
What is the current standard for chart datum?
The level of Lowest Astronomical Tide (LAT) is most commonly used.
What does ‘safety coefficient’ refer to?
The difference between MHWS and actual sea level.
What projection is commonly used in nautical charts?
Mercator projection.
True or False: The rules of the road apply only to vessels at sea.
The rules apply to all vessels at sea and in waters directly connected to the sea.
What is emphasized in Rule 2 of the Rules of the Road?
Good seamanship comes above all and is the most important factor for safe navigation.
Define ‘vessel’ as per the rules.
A craft used for transportation on water, which may also include a seaplane landing on water.
What characterizes a power-driven vessel?
A vessel propelled by machinery, including outboard or inboard engines.
Under what condition is a sailing vessel considered a power-driven vessel?
When the engine is working, even if not fully engaged.
What is a vessel not under command mean?
A vessel unable to maneuver due to involuntary circumstances.
What is a: vessel constrained by her draught?
A power-driven vessel unable to deviate from her course due to draught restrictions.
What is meant by ‘restricted visibility’?
Visibility restricted by fog, mist, snow, rain, or sandstorms.
What is the requirement of Rule 5 regarding look-out?
A good look-out is always needed, both visually and with instruments.
What factors contribute to determining safe speed?
- Traffic density
- Visibility
What does ‘risk of collision’ relate to?
The proximity and speed of two vessels approaching each other.
What actions should be taken to avoid collision?
Actions must be timely and significant enough for the other vessel to notice.
What defines a narrow channel?
A natural or dredged passage adjacent to shallow water, often marked with buoys.
What is a Traffic Separation Scheme?
A method of regulating vessel traffic moving in different directions.
Fill in the blank: A vessel sailing in a TSS has priority only when the other vessel comes from its _______.
portside
