Submarine accidently sinks a trawler

DEFTLEFTHAND

Supposedly (never confirmed) a Royal Navy Sub sank this prawn trawler. The sub got tangled up in the fishing gear and dragged the small boat down.

Thankfully the two crew men got off in this case.

Apparently this has and still does happen on occasion.

Jesus.

Charlie Haughey dragged the British Ambassador in and got an apology from his government for doing this deliberately (according to him) to an Irish trawler during the Falklands war.

FanadMan

That video is 3 years (or more) old. There is suspicion that at least one trawler went down of the Donegal coast in the same way.


From the YouTube page "Published on 27 Oct 2012"

LordSutch

I think this type of accident (sub caught in nets) has happened many times!

In different oceans, and by submarines from different navies.

Manic Moran

Unfortunately, there's nothing you can do about that sort of thing. Submarines navigate by sound, and trawl nets don't make a lot of it for the sub to pick up and avoid.

Similarly, a sub has no way of deliberately aiming for a trawl net CJ's claim would have been without merit.

Esel

Manic Moran wrote: »

Unfortunately, there's nothing you can do about that sort of thing. Submarines navigate by sound, and trawl nets don't make a lot of it for the sub to pick up and avoid.

Similarly, a sub has no way of deliberately aiming for a trawl net CJ's claim would have been without merit.

So they can't detect a trawler, or estimate the direction/location of possible nets?

Chuchote

Esel wrote: »

So they can't detect a trawler, or estimate the direction/location of possible nets?

If the trawler has radar on board of course they can; even you and i can, courtesy of Leonardo DiCaprio's new program:

http://www.globalfishingwatch.org

MIAMI: American movie star Leonardo DiCaprio unveils on Thursday a new, free technology that allows users to spy on global fishing practices, in a bid to curb illegal fishing.

The release of Global Fishing Watch coincides with the Our Oceans Conference hosted by US Secretary of State John Kerry in Washington on September 15 and 16.

It aims to offer a crowd sourced solution to the problem of illegal fishing, which accounts for up to 35 percent of the global wild marine catch and causes yearly losses of $23.5 billion, according to the UN Food and Agriculture Organization.

Overfishing is also a growing problem worldwide, with about two-thirds of fish stocks in the high seas either over exploited or depleted, said the FAO. Some of the planet’s largest fish, including tuna and swordfish, are below 10 percent of their historical level.

The flying mouse

Mad looking at the two lads jumping of the trawler, Back in the eighties as far as I recall this was a common enough occurrence in the Irish sea, water looks cold...

failinis

If I remember right, as that was in the news a few years ago, recently the same thing happened but there were 6 crew men on board and the trawler was suddenly dragged backwards for so many meters then stopped.
It has been guessed it was another submarine close call.

In 2015 the British admitted an MoD submarine dragged a trawler and when I googled that a lot of similar cases across Europe came up, if you are interested in this OP then plenty to read lke.

Jawgap

The boat didn't surface so how would you know if it's an RN one? RN policy is to immediately surface if there are fishing boats in the area - happens all the time around Scotland, and was introduced following a number of sinkings.

The incident referred to above was the Sheralga one - it was sunk by HMS Porpoise while it was checking for Soviet sub activity.

The only boat likely to stay down is a 'boomer' missile boat but the Irish Sea is too shallow for them to operate in - plus why would they? Faslane was picked as the base for those boats (and previously the US ones that operated out of Holy Lough) to allow those boats direct and quick access to the ocean so they could get out, go deep and do what they do best - hide!

Jawgap

Esel wrote: »

So they can't detect a trawler, or estimate the direction/location of possible nets?

No, to detect the nets you have to go from passive sonar (listening to other people's noises) to active sonar (making your own noise and listening to the echo) - you can detect a fishing vessel through its engine noise and from its noise and aspect change a calculation about speed can be made - if she's plodding slowly along she's probably got gear out but you'd not be able to tell what type of gear and what level of the water they were fishing in.

No boat goes on active sonar unless it absolutely has to so they wouldn't be able to spot those parts of the fishing gear that would give a good echo.

Chuchote wrote: »

If the trawler has radar on board of course they can; even you and i can, courtesy of Leonardo DiCaprio's new program:

http://www.globalfishingwatch.org

That system (like marinewatch) runs off AIS (www.marinetraffic.com) - it doesn't use radar except close to shore. Fishing vessel info comes from the VMS feeds - http://ec.europa.eu/fisheries/cfp/control/technologies/vms/index_en.htm

Chuchote

Jawgap wrote: »

That system (like marinewatch) runs off AIS (www.marinetraffic.com) - it doesn't use radar except close to shore. Fishing vessel info comes from the VMS feeds - http://ec.europa.eu/fisheries/cfp/control/technologies/vms/index_en.htm

Translate, please? AIS? VMS?

Jawgap

Chuchote wrote: »

Translate, please? AIS? VMS?

AIS - Automatic Identification System - "an automatic tracking system used on ships and by vessel traffic services (VTS) for identifying and locating vessels by electronically exchanging data with other nearby ships, AIS base stations, and satellites."

VMS - "The vessel monitoring system (VMS) is a satellite-based monitoring system which at regular intervals provides data to the fisheries authorities on the location, course and speed of vessels."