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Search took 0.00 seconds. Search: Posts Made By: Pelagic
Forum: Seamanship & Boat Handling 27-08-2017, 20:52
Replies: 169
Views: 17,476
Posted By Pelagic
Re: Collision Avoidance -- Dealing with Multiple Targets

Sorry my mistake, we agree on AIS avoidance function
I was thinking of the posts about improving 'type' and aspects
Forum: Seamanship & Boat Handling 27-08-2017, 20:31
Replies: 169
Views: 17,476
Posted By Pelagic
Re: Collision Avoidance -- Dealing with Multiple Targets

I see it differentlyv
AIS will give you the info to determine of CPA and if a risk of collision exists

When in sight of each other, daytime visuals or nightime running lights will determine if...
Forum: Seamanship & Boat Handling 24-08-2017, 13:58
Replies: 169
Views: 17,476
Posted By Pelagic
Re: Collision Avoidance -- Dealing with Multiple Targets

Another solution could also be to slowly turn away from the congestion , even back onto a reciprocal heading until the traffic clears so that you can return to your course.
This allows you to...
Forum: Seamanship & Boat Handling 24-08-2017, 09:23
Replies: 169
Views: 17,476
Posted By Pelagic
Re: Collision Avoidance -- Dealing with Multiple Targets

What you describe is multilateral considerations and is assuming that all the other vessels cooperate with you and each other.

If confused......Stopping and sounding the Danger signal may not be...
Forum: Seamanship & Boat Handling 24-08-2017, 07:50
Replies: 169
Views: 17,476
Posted By Pelagic
Re: Collision Avoidance -- Dealing with Multiple Targets

Ramblinrod.. DH is discussing the practical strategies recommended where multiple targets can complicate normal avoidance tactics as set out in COLREGS
Forum: Seamanship & Boat Handling 22-08-2017, 05:48
Replies: 169
Views: 17,476
Posted By Pelagic
Re: Collision Avoidance -- Dealing with Multiple Targets

You are correct...it was Sperry and a long time ago[emoji6]
Forum: Seamanship & Boat Handling 22-08-2017, 00:35
Replies: 169
Views: 17,476
Posted By Pelagic
Re: Collision Avoidance -- Dealing with Multiple Targets

I actually tried the early Raytheon PAD display in simulators.
It was a bit messy at first until you managed the vector lengths and allowed CPA.
Then the trial maneuvers showed you exactly the...
Forum: Seamanship & Boat Handling 21-08-2017, 21:25
Replies: 169
Views: 17,476
Posted By Pelagic
Re: Collision Avoidance -- Dealing with Multiple Targets

Ironically, that was exactly the IMO design brief for ARPA radars.
It was called "PAD" (Predicted Area of Danger)

Raytheon came out with the tracked targets showing a Trapezoid shaped area...
Forum: Seamanship & Boat Handling 20-08-2017, 21:21
Replies: 169
Views: 17,476
Posted By Pelagic
Re: Collision Avoidance -- Dealing with Multiple Targets

With yet another US naval ship involved in a collision in heavy traffic zones, discussion about the wisdom of using Speed versus Course Change in ML conditions should be considered.
Forum: Seamanship & Boat Handling 20-08-2017, 14:57
Replies: 169
Views: 17,476
Posted By Pelagic
Re: Collision Avoidance -- Dealing with Multiple Targets

Something to consider is that one of the weaknesses of many juinior commercial officer's is their reluctance to make a large deviation from their prescribed course. For Fear of the Master...
Forum: Seamanship & Boat Handling 18-08-2017, 21:43
Replies: 169
Views: 17,476
Posted By Pelagic
Re: Collision Avoidance -- Dealing with Multiple Targets

Yes another trick in high density crossing traffic for a sailboat is to get up behind a larger target that matches your speed (sometimes an offshore tug and barge) and follow behind them.

In those...
Forum: Seamanship & Boat Handling 18-08-2017, 16:48
Replies: 169
Views: 17,476
Posted By Pelagic
Re: Collision Avoidance -- Dealing with Multiple Targets

Hi Dockhead
In Marine Colledge and during Simulator exams they call it "Multilateral Considerations" .(MC)

Assesment first including running Test Maneuvers on your ARPA radar to find a solution,...
Showing results 1 to 12 of 12

 
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