1) When she is the overtaking vessel
2) When the other vessel is a Fishing Vessel or Restricted in her Ability to Manoeuvre (RAM) or Not Under Command (NUC).
3) A Sailing Vessel should not impede a Vessel Constrained by Draught (CBD).
A vessel under 20 meters may not impede any vessel which only navigate within a narrow channel or fairway.
Please see the link provided below.
A sailboat is the give-way vessel when it is under sail alone and encounters a motorboat that is underway. According to maritime rules, the sailboat must yield to the motorboat in this situation. Additionally, if the sailboat is under sail and the motorboat is overtaking, the sailboat must also give way. However, if the sailboat is using its engine, it generally has the same responsibilities as a motorboat.
Generally, vessels under sail power have the right of way.
When a sailboat overtakes a powerboat, the powerboat is the stand-on vessel. (Ref: SB-29)
Powerboat
When a sailboat overtakes a powerboat, the powerboat is the stand-on vessel. (Ref: SB-29)
When a sailboat overtakes a powerboat, the powerboat is the stand-on vessel. (Ref: SB-29)
To take early and substantial action to keep well clear of the stand on vessel
Unless the sailboat is overtaking a power-driven vessel, the powerboat is the give-way vessel.
A sailboat and a PWC are meeting head-on. Which one is the stand-on vessel?
The sailboat is considered the give-way vessel when it is overtaking another vessel, including a motorboat. According to the "Rules of the Road," a sailing vessel under sail must also give way to a power-driven vessel that is under way and not restricted in its ability to maneuver. Additionally, if the motorboat is on a direct collision course with the sailboat, the sailboat must give way to the motorboat.
In this scenario, the sailboat is the give-way vessel when it is crossing behind the motorboat because it is required to keep clear of the power-driven vessel. The presence of more passengers on the sailboat does not change its status as the give-way vessel, as the rules of navigation prioritize the type of vessel and its relative position rather than the number of people aboard. Therefore, the sailboat must yield to the motorboat regardless of its passenger count.
When it's the least maneuverable vessel in the encounter.