Now I'm no Nelson....

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Discussion

FiF

44,047 posts

251 months

Saturday 17th June 2017
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Probably not an answer available, but if we seem to be suggesting that the behaviour of the merchant was suspicious, what was the operational role of the navy ship? Could it have been trying to execute a stop?

Even so it should have been able to keep clear, using some sort of normal stop and search procedures.

Do the extreme course variations of the merchantman suggest some sort of struggle for control on board her? Not as in crew struggling to deal with faulty steering but struggle for command? Naval vessel in close proximity might make them do something stupid.

gooner1

Original Poster:

10,223 posts

179 months

Saturday 17th June 2017
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Not sure if the above helps.

FiF

44,047 posts

251 months

Saturday 17th June 2017
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Point I was making is that there are several sets of extreme course variations there, several before and around the time of the collision, then again several hours later to the NW of Oshima. Odd.

gadgetmac

14,984 posts

108 months

Saturday 17th June 2017
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scrwright said:
Tin foil hat time...... Do they run on auto pilot or is there a bod at the wheel at all times? How soon before Russia or North Korea is blamed?
Damn that Kim and his nefarious plans to ram the entire US Pacific fleet! furious

gooner1

Original Poster:

10,223 posts

179 months

Saturday 17th June 2017
quotequote all
gadgetmac said:
Damn that Kim and his nefarious plans to ram the entire US Pacific fleet! furious


Well they have been attacked much closer to home, in the not so distant past, tbf.😱

Boosted LS1

21,183 posts

260 months

Saturday 17th June 2017
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My dad was a skipper on container ships. One night a ship felt a momentary judder but nobody could find a fault. It kept steering to port but nothing wrong could be found. Eventually somebody looked over the bow and discovered an impaled whale, head on. :-( and yes these ships can get a move on if they need to.

s2art

18,937 posts

253 months

Saturday 17th June 2017
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tescorank said:
Total agreed, that class of destroyers top speed is 30 knots
Do we really know that? Or is that just a figure put out by the USN?

HarryW

15,150 posts

269 months

Saturday 17th June 2017
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s2art said:
tescorank said:
Total agreed, that class of destroyers top speed is 30 knots
Do we really know that? Or is that just a figure put out by the USN?
It won't be a million miles away though. Each extra knot towards the top end of speed can take up to double the power.

Roofless Toothless

5,655 posts

132 months

Saturday 17th June 2017
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HarryW said:
It won't be a million miles away though. Each extra knot towards the top end of speed can take up to double the power.
That's interesting, isn't it?

I once saw a TV documentary about the big trans-Atlantic ocean liners of the thirties, when they were racing for the Blue Riband. They interviewed the ex-Captain of the Queen Mary who said that he hated the whole thing. Every time the Normandie went faster he was ordered to get the record back. Just to get there a few minutes faster they had to use half as much fuel again . The ships were designed to cruise at a specific speed, and if you tried to go faster, the water resistance would just build up and hold you back.

I have ever since taken this as a lesson in life. I reckon that I am designed to go at a certain speed, and any attempt to go even a little bit faster will result in a disproportionate expenditure of energy.

It works very well.

98elise

26,498 posts

161 months

Saturday 17th June 2017
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HarryW said:
s2art said:
tescorank said:
Total agreed, that class of destroyers top speed is 30 knots
Do we really know that? Or is that just a figure put out by the USN?
It won't be a million miles away though. Each extra knot towards the top end of speed can take up to double the power.
As above it will be about right. It's 20000+ tons moving at speedboat speeds but through the water rather than on top of it.

I've been on warships doing 30knots plus and they shake and virbrate quite a bit at that speed.

ALawson

7,815 posts

251 months

Saturday 17th June 2017
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In a previous lifetime which included doing four transatlantics on sailing yachts we regularly radioed merchant men either on days or nights, the majority had no watch on and didn't respond to radio comms.

Never been on merchant man doing 30knots but I know Volvo 60 get noise at 35knots plus!

gregs656

10,871 posts

181 months

Saturday 17th June 2017
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TTmonkey said:
The ship that hit it was doing 14knts but had been sailed erratically prior to the incident, doing a u turn on its course before the collision and then after the collision reversi its course again, apparently not stopping after the collision but going back to its original destination.

There's no normal reason for a merchant vessel to be being sailed like this. Wastes fuel and increases costs.

Smells very iffy to me. More to this story to come perhaps? Could it have been a deliberate ramming?
I think the initial change of course (the hard turn to starboard) is to try and avoid the collision and not prior to it.

It then makes a hard turn to port going back to the site of the collision (to provide assistance if required) - you can see it slows at that point - and then turns to starboard again to resume it's previous bearing.

Makes no sense that this was deliberate IMO.




Edited by gregs656 on Saturday 17th June 22:35

Cold

15,236 posts

90 months

Sunday 18th June 2017
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Bodies of the missing sailors have been found inside flooded compartments of Fitzgerald.
Reuters link


gooner1

Original Poster:

10,223 posts

179 months

Sunday 18th June 2017
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gregs656 said:
I think the initial change of course (the hard turn to starboard) is to try and avoid the collision and not prior to it.

It then makes a hard turn to port going back to the site of the collision (to provide assistance if required) - you can see it slows at that point - and then turns to starboard again to resume it's previous bearing.

Makes no sense that this was deliberate IMO.

But why just sail away? You can't do that accidentally.




Edited by gregs656 on Saturday 17th June 22:35

FiF

44,047 posts

251 months

Sunday 18th June 2017
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gooner1 said:
gregs656 said:
I think the initial change of course (the hard turn to starboard) is to try and avoid the collision and not prior to it.

It then makes a hard turn to port going back to the site of the collision (to provide assistance if required) - you can see it slows at that point - and then turns to starboard again to resume it's previous bearing.

Makes no sense that this was deliberate IMO.
But why just sail away? You can't do that accidentally.




]
So what's the reason for the second set of strange course changes to the NE of Oshima.



Edited to post map.

Edited by FiF on Sunday 18th June 10:09

gooner1

Original Poster:

10,223 posts

179 months

Sunday 18th June 2017
quotequote all
FiF said:
So what's the reason for the second set of strange course changes to the NE of Oshima.



Edited to post map.

Edited by FiF on Sunday 18th June 10:09
Tin foil hat on.
A meet , and discharge of passenger(s) to a waiting Sub. Who knows?

768

13,657 posts

96 months

Sunday 18th June 2017
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Usually, Occam. smile

Elroy Blue

8,686 posts

192 months

Sunday 18th June 2017
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What was the OOW doing on the destroyer? No matter what the other ship is doing, your ship shouldn't be in a position where a collision occurs.

cuprabob

14,573 posts

214 months

Sunday 18th June 2017
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Elroy Blue said:
What was the OOW doing on the destroyer? No matter what the other ship is doing, your ship shouldn't be in a position where a collision occurs.
He was online booking an appointment at Specsavers in the next port of call...

FiF

44,047 posts

251 months

Sunday 18th June 2017
quotequote all
Elroy Blue said:
What was the OOW doing on the destroyer? No matter what the other ship is doing, your ship shouldn't be in a position where a collision occurs.
Read the top post by Wordsmith, click to expand the quoted part.

https://www.arrse.co.uk/community/threads/pull-up-...

hehe