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Search took 0.00 seconds. Search: Posts Made By: El Pinguino
Forum: Seamanship & Boat Handling 28-08-2017, 03:59
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

Its a bit of a mindset in ships large and small... new stuff = good stuff. Seen it with Transit SatNav... electronic DR assumed to be where you were... 'is electronic is good'. How many yachts did...
Forum: Seamanship & Boat Handling 27-08-2017, 20:39
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

I think that is what I just said..

'the use of AIS for collision avoidance is not a good idea unless you have first visually identified your OoI.'

Sadly some hereabouts seem to think that it is...
Forum: Seamanship & Boat Handling 27-08-2017, 15:46
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

Please try and keep up....
Forum: Seamanship & Boat Handling 27-08-2017, 13:37
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

You didn't bother to read this did you..

Automatic Identification System (Class B) for Non-Solas Vessels | CA (https://www.theca.org.uk/node/4341)

That is the CA view which I am sure they got...
Forum: Seamanship & Boat Handling 27-08-2017, 04:40
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

Ah Ha! Immediately under that it goes on to say..

'Certain AIS B systems allow users to change and update the vessel type and activity code while underway and where these facilities exist it is...
Forum: Seamanship & Boat Handling 27-08-2017, 03:55
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

Well, I have my AMEC AIS Configuration display for a Class B AIS up on a screen in front of me as I write..

You are correct, class B does not let me enter my status ... ie anchored, NUC, etc.
...
Forum: Seamanship & Boat Handling 27-08-2017, 03:38
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

In the not too distant past most ships did not have true motion radar.... and 99.9% of recreational yachts still don't.

( interesting factoid ... my first ship had 'true motion' radar back in the...
Forum: Seamanship & Boat Handling 27-08-2017, 01:38
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

Not even remotely advanced... very basic and at the heart of radar based collision avoidance.

Not about how is she heading either... simply about 'is she showing red or green and/or are her...
Forum: Seamanship & Boat Handling 27-08-2017, 00:37
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

I've seen small Class A , passenger ships labeled as 'sailing'.....

Departure port and destination along with cargo info that hasn't been updated is not that unusual either.

Meanwhile hands up...
Forum: Seamanship & Boat Handling 26-08-2017, 20:32
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

'Aspect'.... her course over the ground may suggest that she is showing you her green when in fact her actual heading is such that you will be seeing her red.... so your interpretation of who is give...
Forum: Seamanship & Boat Handling 26-08-2017, 19:24
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

A little bit more... from here...

https://www.safety4sea.com/wp-content/uploads/2016/02/IMO-Revised-guidelines-for-onboard-operational-use-of-AIS-2015_12.pdf



'USE OF AIS IN COLLISION...
Forum: Seamanship & Boat Handling 26-08-2017, 19:08
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

One thing that nobody seems to have mentioned in this thread involves heading and speed. Well I mentioned it the other day but my post seems to have mysteriously disappeared.

Few yachts have...
Forum: Seamanship & Boat Handling 22-08-2017, 05:21
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

Hull design on tugboats leads to big wash at speed as they are designed for low speed grunt..

The Stena HSS's used to operate at over 40 knots... no wash near them but in the shallows quite some...
Forum: Seamanship & Boat Handling 22-08-2017, 01:50
Replies: 169
Views: 17,475
Posted By El Pinguino
Re: Collision Avoidance -- Dealing with Multiple Targets

I think you will find PADs was a Sperry thing..... only sailed with one in the early 80's.... interesting kit and better than many/most/all of the other ARPA's around at the time....

Some...
Showing results 1 to 14 of 14

 
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