Titanic tourist sub missing

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#3093026 21-Jun-2023 14:19

Poor souls, really a horrible situation.

My question is, why isn't the sub tethered to a ship above water? Surely that would be the easiest and simplest way of getting out of issues?

wellygary

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#3093028 21-Jun-2023 14:26

This is all getting very "Timmy down the well" ..

Meanwhile the official death toll from the migrant boat disaster in the Mediterranean reaches 81 with hundreds more expected to be declared dead in coming days,

https://www.theguardian.com/world/2023/jun/20/greek-shipwreck-migrant-boat-more-bodies-found

Eva888

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#3093032 21-Jun-2023 14:31

A gleam of hope.

https://www.dailymail.co.uk/news/article-12216977/Searchers-Titanic-Tourist-Sub-Heard-Banging-Area-Internal-Comms-Reveal.html

Canuckabroad

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#3093043 21-Jun-2023 14:55

Eva888: A gleam of hope.

https://www.dailymail.co.uk/news/article-12216977/Searchers-Titanic-Tourist-Sub-Heard-Banging-Area-Internal-Comms-Reveal.html

I hope this is true. Thus far only tabloid and sites with questionable veracity (like the daily mail) are posting this.

neb

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#3093056 21-Jun-2023 15:13

kingdragonfly: I heard the sub's hatch is incompatible with standard military rescue sub hatches.

It's not just the hatch, have you looked at the photos of that thing? It looks like an undergraduate engineering student project, I'd be nervous going down 50m (5 ATM) in that thing let alone 3,800m (380 ATM, which from a quick Google is 40MPa, that'll shatter most types of solid concrete).

johno1234

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#3093059 21-Jun-2023 15:17

Yep it looks like a Heath Robinson contraption. Now wondering if it met certification requirements for carrying fee paying passengers.

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neb

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#3093061 21-Jun-2023 15:21

johno1234:
Yep it looks like a Heath Robinson contraption. Now wondering if it met certification requirements for carrying fee paying passengers.

It didn't, it's an experimental scientific vessel that doesn't require certification.

Rikkitic

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#3093062 21-Jun-2023 15:21

surfisup1000:

Probably physics. Sonar has a limited range. Radio waves do not pass through water.

Not true. Low frequency radio waves can penetrate water to an extent and according to this article extremely low frequencies can reach up to 120 metres depth.

Plesse igmore amd axxept applogies in adbance fir anu typos

Handle9

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#3093064 21-Jun-2023 15:24

heavenlywild:
Poor souls, really a horrible situation.

My question is, why isn't the sub tethered to a ship above water? Surely that would be the easiest and simplest way of getting out of issues?

They are diving 4km under the water. A tether creates a further hazard of tangling or getting caught on obstructions.

Eva888

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#3093070 21-Jun-2023 15:41

Canuckabroad:
Eva888: A gleam of hope.

https://www.dailymail.co.uk/news/article-12216977/Searchers-Titanic-Tourist-Sub-Heard-Banging-Area-Internal-Comms-Reveal.html

I hope this is true. Thus far only tabloid and sites with questionable veracity (like the daily mail) are posting this.

CNN 3 hours ago and our 1 News are also reporting it. Hard to imagine they have enough time to be saved even if located now.

surfisup1000

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#3093072 21-Jun-2023 15:50

Rikkitic:

Not true. Low frequency radio waves can penetrate water to an extent and according to this article extremely low frequencies can reach up to 120 metres depth.

You do realise the Titanic is 3800m down?

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Handle9

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#3093073 21-Jun-2023 15:54

surfisup1000:
Rikkitic:

Not true. Low frequency radio waves can penetrate water to an extent and according to this article extremely low frequencies can reach up to 120 metres depth.

You do realise the Titanic is 3800m down?

Not to mention the data rates are incredibly low and the size of the transmitter and antennas are huge.

johno1234

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#3093075 21-Jun-2023 16:00

neb:
johno1234:

Yep it looks like a Heath Robinson contraption. Now wondering if it met certification requirements for carrying fee paying passengers.

It didn't, it's an experimental scientific vessel that doesn't require certification.

If experimental then it shouldn't be allowed to take fare paying passengers. Well, that's how it works in aviation.

For a vessel to be able to charter in NZ it has to meet a well defined set of standards. Same in the USA.

Canuckabroad

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#3093078 21-Jun-2023 16:09

How experimental or safe it was is up for debate. Clearly the CEO of the tourism company operating it was comfortable enough trusting it with their life as they were the pilot. I did read something suggesting that everyone had to sign wavers suggesting that there were risks in participating.

surfisup1000

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#3093079 21-Jun-2023 16:10

johno1234:

If experimental then it shouldn't be allowed to take fare paying passengers. Well, that's how it works in aviation.

For a vessel to be able to charter in NZ it has to meet a well defined set of standards. Same in the USA.

Space tourism is the same... I'm certain there will be multiple fatalities at some stage.

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