Colregs Questions and Answers (Q & A)

Rule 12

Sailing vessels

The answers can be found in the respective Rules and Paragraphs in the book"International Regulations for Preventing Collisions at Sea (Colregs) by Capt. Pierre Deseck and/or in the Colregs Presentation (on DVD), also by Capt. Pierre Deseck

Q = Question; A= Answer


Q 12-1
Which factors shall sailing vessels take into account in case there is risk of collision ?

A 12-1
Rule 12 (a) and Par. 12.1, General.
Click on risk of collision for a summary

Q 12-2
Define the point of sailing of a sailing vessel.

A 12-2 Par. 12.2, Point of sailing of the vessel.
Click on points of sailing for a summary

Q 12-3
Define the “port tack” of a sailing vessel.

A 12-3
Par. 12.2, Point of sailing of the vessel.

Q 12-4
Define the “starboard tack” of a sailing vessel.

A 12-4
Par. 12.2, Point of sailing of the vessel.
Click on points of sailing for a summary

Q 12-5
How can a sailing vessel be sailing with regard to the direction of the wind ?

A 12-5
Par. 12.2, Point of sailing of the vessel, Note.
Click on points of sailing for a summary

Q 12-6
Define the windward and leeward side of a sailing vessel.

A 16-6
Rule 12 (b) and Par. 12.3, The windward and leeward side of the sailing vessel.
Click on points of sailing for a summary

Q 12-7
Define the windward and leeward sailing vessel.

A 12-7
Par. 12.4, The windward and leeward sailing vessel.
Click on points of sailing for a summary

Q 12.8
When two sailing vessels each have the wind on a different side and there is risk of collision, which sailing vessel must keep out of the way ? How is this rule commonly called ?

A 12-8
Rule 12 (a) (i) and Par. 12.4.1, The port and starboard tack rule.

Click on wind on a different side for a summary

Click on port and starboard tack rule for an animation

Q 12-9
When two sailing vessels each have the wind on the same side and there is risk of collision, which sailing vessel must keep out of the way? How is that rule commonly called ?

A 12-9
Rule 12 (a) (ii) and Par. 12.4.2, The windward and leeward rule.

Click on wind on the same side for a summary

Click on windward and leeward rule for an animation

Q 12-10
How must a sailing vessel with the wind on the port side act when there is risk of collision with another sailing vessel and the tack of that vessel cannot be determined with certainty ?

A 12-10
Rule 12 (a) (iii) and Par. 12.4.3, The port tack rule for doubtful cases.

Q 12-11
Summarize the main rules a sailing vessel has to comply with not to im­pede another vessel or to avoid risk of collision.

A 12-11
After typical case 6.

About 1500 slides and 50 animations are available on our DVD Colregs Presentation which can be purchased online (click on books or read the books).