The boat that can most easily give way does so.
One prolonged and two short blasts is 'D' in Morse signals. It is a signal to be used in restricted visibility by a vessel not under command[NUC], a vessel restricted in her ability to manoeuvre[RAM], a vessel constrained by her draught, a sailing vessel, a vessel engaged in fishing and a vessel engaged in towing or pushing another vessel.
It has several meanings depending on circumstances.A vessel not under command or restricted in its ability to manoeuvre, or constrained by her draught, or engaged in fishing, or towing or pushing, or a sailing vessel.
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.
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.
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.
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.
Sounds of Korotkoff
In accordance with rule 28 of the 72 COLREGS a vessel 'constrained by her draft' shall display 3 red lights vertically in addition to other navigation lights. Please see the link provided below.
These sounds are called bruit and are listened to using a stethoscope. Bruit indicates partial arterial obstruction.
Cylinder. Think of a can, like a beer can hoisted up the mast. Some people remember "Can of draft beer".
draught