OUPV 6 Pack 2025/2026 Exam Questions
and Detailed Answers | Get it 100%
Correct Answers
1 Part per million is oil pollution - 🧠ANSWER ✔✔
Low Pressure - 🧠ANSWER ✔✔Air rises near low pressure areas. As air
rises, it cools and often condenses
What is piloting? - 🧠ANSWER ✔✔Piloting is the movement of a vessel by
referring to landmarks, aids to navigation, depth sounding and radio
navigation.
What is dead reckoning? - 🧠ANSWER ✔✔The process of navigating by
advancing a known position using course, speed, time and distance to be
traveled. In other words, figuring out where you will be at a certain time if
you hold speed, time and course you plan to travel.
,DR Plot (Dead reckoning plot) - 🧠ANSWER ✔✔A DR plot should be
maintained at all times. It is the best estimate of where the vessel should
be at any given time.
Latitude and Longitude - 🧠ANSWER ✔✔Marine navigation is based on a
system of geographic coordinates that are used to describe a specific
location on a body of water. The best known system and most widely used
set of coordinates is latitude and longitude system.
Nautical mile - 🧠ANSWER ✔✔equals approximately 2000 yards or 1.15
statute miles.
Distance on nautical charts is measured by? - 🧠ANSWER ✔✔We use
ONLY latitude to measure distance on nautical charts.
True North - 🧠ANSWER ✔✔Is different from magnetic north. The difference
between them is called Variation.
Mercator projection - 🧠ANSWER ✔✔The type of projection most widely
used in coastal navigation.
1 Min of latitude is equal to 1 mile everywhere - 🧠ANSWER ✔✔LATITUDE
SCALE ONLY that is used for measuring distance.
,Compass card - 🧠ANSWER ✔✔Remains stationary and the vessel turns
around the compass card.
Lubber Line - 🧠ANSWER ✔✔The Lubber's line is a line or mark scribed on
the compass card housing to indicate the direction in which the boat is
heading.
Variation - 🧠ANSWER ✔✔The difference between true north and magnetic
north.
On nautical charts, the variation for a given area is noted at the center of
the compass Rose. - 🧠ANSWER ✔✔
What is Deviation? - 🧠ANSWER ✔✔The compass error caused by
magnetic forces within the vessel, such as electronic equipment and
ferrous metal objects.
The sum of variation and deviation are called? - 🧠ANSWER ✔✔Compass
error
National Ocean Service - 🧠ANSWER ✔✔Part of NOAA and responsible for
preparing nautical charts
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, Mercator Chart - 🧠ANSWER ✔✔Mercator chart projection is the most
widely used projection is marine navigation.
Small scale-Large Scale - 🧠ANSWER ✔✔Small scale charts show a large
area. Large scale chart shows a small area.
All heights given in feet above mean high water unless otherwise stated. -
🧠ANSWER ✔✔
Vertical roman lettering used to table all conspicuous information that is not
affected by the tidal changes or current. - 🧠ANSWER ✔✔
A dotted line around any symbol calls special attention to its hazardous
nature. - 🧠ANSWER ✔✔
Coast Guards local notice to mariners - 🧠ANSWER ✔✔Charts are
corrected using information provided in the Coast Guard's local notice to
mariners. They are published weekly by geographic region.
Mariners are first warned by a marine broadcast local notice to mariners. -
🧠ANSWER ✔✔
and Detailed Answers | Get it 100%
Correct Answers
1 Part per million is oil pollution - 🧠ANSWER ✔✔
Low Pressure - 🧠ANSWER ✔✔Air rises near low pressure areas. As air
rises, it cools and often condenses
What is piloting? - 🧠ANSWER ✔✔Piloting is the movement of a vessel by
referring to landmarks, aids to navigation, depth sounding and radio
navigation.
What is dead reckoning? - 🧠ANSWER ✔✔The process of navigating by
advancing a known position using course, speed, time and distance to be
traveled. In other words, figuring out where you will be at a certain time if
you hold speed, time and course you plan to travel.
,DR Plot (Dead reckoning plot) - 🧠ANSWER ✔✔A DR plot should be
maintained at all times. It is the best estimate of where the vessel should
be at any given time.
Latitude and Longitude - 🧠ANSWER ✔✔Marine navigation is based on a
system of geographic coordinates that are used to describe a specific
location on a body of water. The best known system and most widely used
set of coordinates is latitude and longitude system.
Nautical mile - 🧠ANSWER ✔✔equals approximately 2000 yards or 1.15
statute miles.
Distance on nautical charts is measured by? - 🧠ANSWER ✔✔We use
ONLY latitude to measure distance on nautical charts.
True North - 🧠ANSWER ✔✔Is different from magnetic north. The difference
between them is called Variation.
Mercator projection - 🧠ANSWER ✔✔The type of projection most widely
used in coastal navigation.
1 Min of latitude is equal to 1 mile everywhere - 🧠ANSWER ✔✔LATITUDE
SCALE ONLY that is used for measuring distance.
,Compass card - 🧠ANSWER ✔✔Remains stationary and the vessel turns
around the compass card.
Lubber Line - 🧠ANSWER ✔✔The Lubber's line is a line or mark scribed on
the compass card housing to indicate the direction in which the boat is
heading.
Variation - 🧠ANSWER ✔✔The difference between true north and magnetic
north.
On nautical charts, the variation for a given area is noted at the center of
the compass Rose. - 🧠ANSWER ✔✔
What is Deviation? - 🧠ANSWER ✔✔The compass error caused by
magnetic forces within the vessel, such as electronic equipment and
ferrous metal objects.
The sum of variation and deviation are called? - 🧠ANSWER ✔✔Compass
error
National Ocean Service - 🧠ANSWER ✔✔Part of NOAA and responsible for
preparing nautical charts
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, Mercator Chart - 🧠ANSWER ✔✔Mercator chart projection is the most
widely used projection is marine navigation.
Small scale-Large Scale - 🧠ANSWER ✔✔Small scale charts show a large
area. Large scale chart shows a small area.
All heights given in feet above mean high water unless otherwise stated. -
🧠ANSWER ✔✔
Vertical roman lettering used to table all conspicuous information that is not
affected by the tidal changes or current. - 🧠ANSWER ✔✔
A dotted line around any symbol calls special attention to its hazardous
nature. - 🧠ANSWER ✔✔
Coast Guards local notice to mariners - 🧠ANSWER ✔✔Charts are
corrected using information provided in the Coast Guard's local notice to
mariners. They are published weekly by geographic region.
Mariners are first warned by a marine broadcast local notice to mariners. -
🧠ANSWER ✔✔
