I was taught that aspect is essentially a measure of how the other vessel sees your ship. Imagining myself on the target's bridge, I would see my own vessel bearing 53 degrees to the port (red) side of the ship's head measured from point A. Therefore R053.
I will just add that it is better to do all the bearings in RELATIVE BEARINGS since all the calculations are done in relative motion, it was the way I was taught at the Maritime School, and in reality it is way easier in order to be able to have a good situation awareness between looking out the window , getting the information from the radar, and plotting the information on the radar plotting sheet.
Hi , I hope that you have enjoyed the video, I publish also under waves and means . but could I answer a question on aspect . ASPECT is that you see the other vessel in respect to Me. But I also need to take into account my Aspect to her. To identify aspect of both vessels are needed to fully understand the action to be taken in a collision situation. Mine is easy to identify a simple relative bearing referenced to my bow. Her aspect at any moment in time , is a little more difficult to establish it is a product of her course and the reciprocal bearing . Aspect : In Restricted visibility, Section 3 Vessel not insight of each other. . We need to know the aspect of BOTH the approaching vessel and MY aspect to her , to understand fully which the part of the rule to apply (particularly rule 19 d part 1 or 2) . As "I shall take any action so as to avoid collision" in this case (Rule19) as both vessels have to take avoiding action When dealing with Aspect in Section 2 "vessels in sight of one another" Which of the steering and sailing rules apply? In These rules am I a stand on? or Give way vessel? Rule 13 .... Is the other vessel approaching more than 22.5 deg abaft MY beam ? Rule 14 .... Are both vessels approaching on reciprocal or nearly reciprocal courses to MY vessel? Rule 15...... Is the vessel approaching on MY Starboard side (on a steady bearing range reducing ) other than those identified in rule 13 or 14 Hope this helps :-) Jonathan ward Waves and Means
he's right, the aspect is red is because you can see the left side of the vessel red on port which is the left side of the vessel if facing north and being grren on the STBD side which is the right side.. believe me and i think he's a captain, captain knows better.
mHinekho what do you mean by relative distance? You can just straight away take the divider and measure between ownship and the target. Any target around the PPI, if you measure the distance, it will be the relative distance from your vessel. Or do you mean the CPA (Closest Point of Approach)?...
hi jonathan can u explain and teach me how to find relatives distance(R.D) m1 time is 11:36 bearing is 280 degree the range is 16 m2 time is 11:42 bearing is 274 degre the range 13.6 m3 time is 11:48 bearing is 265 the range is 11.4 my own ship is 350degree my speed is 18knots
Although some of what is being taught is correct , I am surprised to see so much inaccurate information. A) you should give bearing of CPA B) you should use time of CPA and not the number of minutes it will take to get to CPA as this can confuse C) last point, if you had a target at 11:00 (put down any time you want) bearing 010 range 11nm and that same target then has a CPA at 1136 (24mins after A), there is no way that your target vessel is on a 250 course! it is on a true course of 208 and its speed is closer to 12 kts! Speed being out 3 kts is not major for a yachtsman but 40 odd degrees out on the true course .......................! Would hate to tell my captain that as navigator I was out 40 degrees.
nice video mate... but i think u are wrong about the aspect. aspect is how the other vessel see u . thats mean in your case the aspect should be green.. by the way thanks man looking for more video from u
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Very good and simple, it could not be better explained.
I was taught that aspect is essentially a measure of how the other vessel sees your ship. Imagining myself on the target's bridge, I would see my own vessel bearing 53 degrees to the port (red) side of the ship's head measured from point A. Therefore R053.
thank u sir for this wonderful vid, i hope u have more...
Sir u made it look very simple
Thanku very mch
Good clear explanation. Thanks .
VERY NICELY EXPLAINED SIR
I will just add that it is better to do all the bearings in RELATIVE BEARINGS since all the calculations are done in relative motion, it was the way I was taught at the Maritime School, and in reality it is way easier in order to be able to have a good situation awareness between looking out the window , getting the information from the radar, and plotting the information on the radar plotting sheet.
Hello please, the duties of the first officer before and after the loading while downloading and loading the description. Thank you
Hi , I hope that you have enjoyed the video, I publish also under waves and means . but could I answer a question on aspect .
ASPECT is that you see the other vessel in respect to Me. But I also need to take into account my Aspect to her.
To identify aspect of both vessels are needed to fully understand the action to be taken in a collision situation.
Mine is easy to identify a simple relative bearing referenced to my bow.
Her aspect at any moment in time , is a little more difficult to establish it is a product of her course and the reciprocal bearing .
Aspect : In Restricted visibility, Section 3 Vessel not insight of each other. .
We need to know the aspect of BOTH the approaching vessel and MY aspect to her , to understand fully which the part of the rule to apply (particularly rule 19 d part 1 or 2) .
As "I shall take any action so as to avoid collision" in this case (Rule19) as both vessels have to take avoiding action
When dealing with Aspect in Section 2 "vessels in sight of one another"
Which of the steering and sailing rules apply?
In These rules am I a stand on? or Give way vessel?
Rule 13 .... Is the other vessel approaching more than 22.5 deg abaft MY beam ?
Rule 14 .... Are both vessels approaching on reciprocal or nearly reciprocal courses to MY vessel?
Rule 15...... Is the vessel approaching on MY Starboard side (on a steady bearing range reducing ) other than those identified in rule 13 or 14
Hope this helps :-)
Jonathan ward Waves and Means
he's right, the aspect is red is because you can see the left side of the vessel red on port which is the left side of the vessel if facing north and being grren on the STBD side which is the right side.. believe me and i think he's a captain, captain knows better.
If I showed o plot that untidy to the old man he’d kick me off the bridge
no! aspect is how you see the other vessel
mHinekho what do you mean by relative distance? You can just straight away take the divider and measure between ownship and the target. Any target around the PPI, if you measure the distance, it will be the relative distance from your vessel. Or do you mean the CPA (Closest Point of Approach)?...
Beginning is ok, just enough to catch up. However the end is not explained
thank you very much
hi jonathan can u explain and teach me how to find relatives distance(R.D)
m1 time is 11:36 bearing is 280 degree the range is 16
m2 time is 11:42 bearing is 274 degre the range 13.6
m3 time is 11:48 bearing is 265 the range is 11.4
my own ship is 350degree my speed is 18knots
how the 6 min is equivalent of 0.1H? can ou tell me pls?
it depends upon the scale used.. its not 6min literally.. minutes there is about the degree.. he solved it for time..
1 hour is 60 minutes, so 6 minutes is 0.1 hour
6 min is divided by 60
60 mins = 1.0 H
6 mins = 0.1 H
Hi dear
Although some of what is being taught is correct , I am surprised to see so much inaccurate information.
A) you should give bearing of CPA
B) you should use time of CPA and not the number of minutes it will take to get to CPA as this can confuse
C) last point, if you had a target at 11:00 (put down any time you want) bearing 010 range 11nm and that same target then has a CPA at 1136 (24mins after A), there is no way that your target vessel is on a 250 course! it is on a true course of 208 and its speed is closer to 12 kts!
Speed being out 3 kts is not major for a yachtsman
but 40 odd degrees out on the true course .......................!
Would hate to tell my captain that as navigator I was out 40 degrees.
Sdhgc I dont agree with you abt the aspect.
nice video mate... but i think u are wrong about the aspect. aspect is how the other vessel see u . thats mean in your case the aspect should be green.. by the way thanks man looking for more video from u