Since your Day Skip

Renegade_Master

Renegade_Master

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has anyone since taking their day Skipper course, ever had to go through the complication of working out a tidal vector(s) in real life yet.

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No

Should I and have I missed something?

Nick

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why? you a secret waafi then

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Did you get your rib?

<hr width=100% size=1>rich :-)) <A target="_blank" HREF=http://www.jersey-harbours.com>http://www.jersey-harbours.com</A>
 
Might have guessed it. The experts are busy doing sums whilst the rest of us just get on with it. Whats a tidal vector. I'm sure I knew once but have forgotten due to complete apathy./forums/images/icons/laugh.gif

<hr width=100% size=1> <font color=blue>No one can force me to come here.<font color=red> I'm a volunteer!!.<font color=blue>

Haydn
 
Not yet Rich, the guy in Guernsey said it would cost £700 just to get his van across to S'hampton and back. I have had some offers following a thread I put on R****t for someone to tow her in exchange for a free Day Skip/ICC and expenses. Funny three of the replies were from guys called Stuart.

Anyway what about my question

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As you know haydn instructors have to do them regularly whilst teaching as part of the course, but my question which powerskipper responded to was regarding
"real life" i.e. out on a passage for leisure. I reckon shes a secret wafi really.

I'm in agreement with you on this hence the thread.

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Whats a 'wafi' then and, no, I dont know any fast mobo skipper that bothers with tidal vectors only that you should mentally note rate and direction as it affects sea state and will tend to push you off track

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Wind Assisted F***ing idiot.

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Ah, Wind Assisted Floating Idiot, now I understand

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Oh great

Yeah total waste of time. I haven't used Maydays, or MOB, or any first aid either. So that could be chopped too. In fact, I did a degree at university and since then I've never ever had to sit at a rickety little table and answer questions for 8 lots of 2hours stints either.

Training eh - it's all a load of rubbish innit?


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exactly. Mind you I went all last year and could never find a tide table, so working out vectors would have been quite pointless. Tended to just see where the sea was on the rocks and guess where it was going. Asking other people seems to be the most dangerous thing. There all dead sure that HT is at 3/30. When actually it was 12 oclock!!

Mind you. round Plymouth theres loads of water for most places anytime. So it depends on "Need to know"

Theres a poem that helps.

When it was up it was up.

And when it was down it was down.

And when it was only half way up.

It was neither up nor down!!

Power skipper should put this in the silly bus it's much easier../forums/images/icons/laugh.gif

<hr width=100% size=1> <font color=blue>No one can force me to come here.<font color=red> I'm a volunteer!!.<font color=blue>

Haydn
 
Hm. Bit late to look at the sea if setting off x-channel and wanting the flattest and quickest time for going thru the alderney race, wouldn'tcha? Of if you can get into St helier?

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Now come on TCM you've been to university.

The lock gate in St Helier is either open or shut. If the tide is out it's shut.

When it's in. Its open.

I think you complicate things to much!!

<hr width=100% size=1> <font color=blue>No one can force me to come here.<font color=red> I'm a volunteer!!.<font color=blue>

Haydn
 
Re: Mathematical tables

Whilst being taught rudimentary navigation some years ago by an experienced member of our Thames boat club, I was introduced to a set of mathematical tables that perform the same function as tidal vectors. All you need is your own course and speed, the tidal course and speed (from tidal atlas or chart tidal diamonds) and then it is just a look up table. Gives SOG (speed over ground) and the adjustment required to your course. You do have to decide if the adjustment is port or sbd (left or right!!)!!

Only use it on longer journeys and am absolutley certain it is quite unneccessary! Makes me feel good though, so will continue.

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Yes

About 5/6 years ago heading for Inverness and got caught in fog South of Peterhead

Had no GPS at that time, relied on Decca - which lost lock somewhere south of P/head. Learnt later it always did.

Had to use DR all the way round Rattray Head and into Moray Firth. Thick fog all the way, no sight of anything, and some very interesting tides around the headland.

At one stage tried taking a bearing on Rattray Head foghorn for a running fix. Not a great success.

Fine ignoring tidal effect if your doing 30 knots but you don't do 30 knots in fog - do you.

I was certainly relieved that night that I kept in practice. So was the crew.

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I was looking for an answer such as yours as,.. though its never happened to me,. I imagine when one has to slow down to displacement speed, due to either thick fog or one engine failed, then motor boats are more vunerable to the effect of tides, and may need to work out vectors.

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