Sea School - OUPV Study Guide
2025 Questions and Answers
Yellow towing lights - ✔✔Two yellow lights in a vertical line above the stern light,
used to indicate a vessel is towing another vessel
Small white light - ✔✔A small white light in lieu of the stern light, used to indicate a
vessel is not under command or restricted in her ability to maneuver
Ascending to leeward - ✔✔When a vessel is unable to maintain its course and speed, it
indicates a loss of maneuverability
Almanac - ✔✔A book or table containing astronomical and navigational information
used for navigation purposes
Reticle - ✔✔A grid or pattern used in navigation instruments to assist in taking accurate
readings
Visit - ✔✔To board or go on board a vessel for inspection or other purposes
Impale - ✔✔To pierce or fix with a sharp object, often used in the context of securing
something to a surface
Monad - ✔✔A single unit or entity, often used in the context of describing a vessel
Distress signal - ✔✔A signal indicating an emergency or the need for assistance, used to
communicate distress to other vessels or authorities
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
, Directing the beam of a searchlight - ✔✔A distress signal used to attract attention or
indicate distress by pointing the beam of a searchlight towards the source of distress
Smoke signal - ✔✔A distress signal consisting of the release of orange-colored smoke to
indicate distress or the need for assistance
Whistle signal - ✔✔A distress signal consisting of one prolonged blast followed by three
short blasts of a vessel's whistle
International Code Signal 'PAN' - ✔✔A distress signal spoken over radiotelephone,
indicating an urgent message or the need for immediate assistance
Public safety activities - ✔✔Activities carried out by a commercial vessel that promote
public safety, such as search and rescue operations or pollution control
Flashing yellow light - ✔✔A light that flashes yellow, often used as a warning or
caution signal
Alternately flashing red and yellow light - ✔✔A light that alternates between flashing
red and yellow, often used as a warning or caution signal
Flashing blue light - ✔✔A light that flashes blue, often used to indicate a law
enforcement or emergency vessel
Alternately flashing blue and red light - ✔✔A light that alternates between flashing blue
and red, often used to indicate a law enforcement or emergency vessel
Short blast - ✔✔A blast of the vessel's whistle that lasts for two to four seconds, used as
a sound signal for various navigational purposes
White over red lights - ✔✔Lights displayed on a vessel underway crossing your stern,
indicating that the vessel is restricted in its ability to maneuver
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
2025 Questions and Answers
Yellow towing lights - ✔✔Two yellow lights in a vertical line above the stern light,
used to indicate a vessel is towing another vessel
Small white light - ✔✔A small white light in lieu of the stern light, used to indicate a
vessel is not under command or restricted in her ability to maneuver
Ascending to leeward - ✔✔When a vessel is unable to maintain its course and speed, it
indicates a loss of maneuverability
Almanac - ✔✔A book or table containing astronomical and navigational information
used for navigation purposes
Reticle - ✔✔A grid or pattern used in navigation instruments to assist in taking accurate
readings
Visit - ✔✔To board or go on board a vessel for inspection or other purposes
Impale - ✔✔To pierce or fix with a sharp object, often used in the context of securing
something to a surface
Monad - ✔✔A single unit or entity, often used in the context of describing a vessel
Distress signal - ✔✔A signal indicating an emergency or the need for assistance, used to
communicate distress to other vessels or authorities
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
, Directing the beam of a searchlight - ✔✔A distress signal used to attract attention or
indicate distress by pointing the beam of a searchlight towards the source of distress
Smoke signal - ✔✔A distress signal consisting of the release of orange-colored smoke to
indicate distress or the need for assistance
Whistle signal - ✔✔A distress signal consisting of one prolonged blast followed by three
short blasts of a vessel's whistle
International Code Signal 'PAN' - ✔✔A distress signal spoken over radiotelephone,
indicating an urgent message or the need for immediate assistance
Public safety activities - ✔✔Activities carried out by a commercial vessel that promote
public safety, such as search and rescue operations or pollution control
Flashing yellow light - ✔✔A light that flashes yellow, often used as a warning or
caution signal
Alternately flashing red and yellow light - ✔✔A light that alternates between flashing
red and yellow, often used as a warning or caution signal
Flashing blue light - ✔✔A light that flashes blue, often used to indicate a law
enforcement or emergency vessel
Alternately flashing blue and red light - ✔✔A light that alternates between flashing blue
and red, often used to indicate a law enforcement or emergency vessel
Short blast - ✔✔A blast of the vessel's whistle that lasts for two to four seconds, used as
a sound signal for various navigational purposes
White over red lights - ✔✔Lights displayed on a vessel underway crossing your stern,
indicating that the vessel is restricted in its ability to maneuver
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
