Oil Tanker in Distress.





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  1. #1
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    Default Oil Tanker in Distress.

    Hopefully this all ends well.Tanker is empty.
    Seems to be problems with the main engine/Stern tube.They not letting out too much.

    https://safetyatsea.net/news/2020/cr...african-coast/

    https://www.algoafm.co.za/local/crud...off-wild-coast

    https://www.vesselfinder.com/vessels...MMSI-414213000
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    Default Re: Oil Tanker in Distress.

    Should we be saving the communists?

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    Default Re: Oil Tanker in Distress.

    My biggest fantasy is for one of those massive container ships with a thousand five hundred containers to sink 2,5km off Umdloti and disperse a thousand five hundred containers over a wide area. Off course with no loss of life and with no pollution to the environment.

    Can you imagine the fish life that would proliferate between all these containers and the massive ship itself.

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    Default Re: Oil Tanker in Distress.

    Quote Originally Posted by plunger View Post
    My biggest fantasy is for one of those massive container ships with a thousand five hundred containers to sink 2,5km off Umdloti and disperse a thousand five hundred containers over a wide area. Off course with no loss of life and with no pollution to the environment.

    Can you imagine the fish life that would proliferate between all these containers and the massive ship itself.
    Dude - you are weird....
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    Default Re: Oil Tanker in Distress.

    Quote Originally Posted by EHoffmann View Post
    Dude - you are weird....
    He is a fisherman first.....a plumber second
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    Default Re: Oil Tanker in Distress.

    Quote Originally Posted by EHoffmann View Post
    Dude - you are weird....
    If you take our coastline its a desert. They sink one small barge on purpose to create a reef and its quite unbelievable how the fish life has exploded. This barge is probably only twenty meters long. Imagine what a massive ship and some containers would do.?

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    Default Re: Oil Tanker in Distress.

    Quote Originally Posted by plunger View Post
    If you take our coastline its a desert. They sink one small barge on purpose to create a reef and its quite unbelievable how the fish life has exploded. This barge is probably only twenty meters long. Imagine what a massive ship and some containers would do.?
    I've had the pleasure to dive on the Produce close to Aliwal Shoal and the barge off Umhlanga. The fish life at both sites is amazing and they are lying on large sand areas where there wasn't much life before the wrecks went down.
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    Default Re: Oil Tanker in Distress.

    Quote Originally Posted by Paul#25 View Post
    I've had the pleasure to dive on the Produce close to Aliwal Shoal and the barge off Umhlanga. The fish life at both sites is amazing and they are lying on large sand areas where there wasn't much life before the wrecks went down.
    I am referring to the barge and have never dived on it. (I suffer from clastrafobia) Just look what a small structure does to fish life. Can you imagine the fishlife on a sunken ship full of containers.

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    Default Re: Oil Tanker in Distress.

    Quote Originally Posted by plunger View Post
    If you take our coastline its a desert. They sink one small barge on purpose to create a reef and its quite unbelievable how the fish life has exploded. This barge is probably only twenty meters long. Imagine what a massive ship and some containers would do.?
    I believe that a couple of hundred chinese built fishing trawlers, stern to aft, are perfectly suited for this.


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    Default Re: Oil Tanker in Distress.

    Quote Originally Posted by LC Man View Post
    Hopefully this all ends well.Tanker is empty.
    Seems to be problems with the main engine/Stern tube.They not letting out too much.

    https://safetyatsea.net/news/2020/cr...african-coast/

    https://www.algoafm.co.za/local/crud...off-wild-coast

    https://www.vesselfinder.com/vessels...MMSI-414213000
    The captain anchored her in about 20m of water after some engine problems.
    Tugs from Dbn was sent to help and reached her at 19:30 last night, she was successful being towed back to Dbn but was to dark for any pictures

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    Default Re: Oil Tanker in Distress.

    Quote Originally Posted by plunger View Post
    My biggest fantasy is for one of those massive container ships with a thousand five hundred containers to sink 2,5km off Umdloti and disperse a thousand five hundred containers over a wide area. Off course with no loss of life and with no pollution to the environment.

    Can you imagine the fish life that would proliferate between all these containers and the massive ship itself.
    They float sometimes and cause a maritime navigation hazard.
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    Default Re: Oil Tanker in Distress.

    Quote Originally Posted by Chris8d View Post
    The captain anchored her in about 20m of water after some engine problems.
    Tugs from Dbn was sent to help and reached her at 19:30 last night, she was successful being towed back to Dbn but was to dark for any pictures
    No.The tanker is still at anchor with a small tug connected to her stern as a backup.The Anchor handling vessel Pacific Dolphin is on its way from Cape Town.She will tow the Tanker to Durban.
    The little tug connected to the Tanker at the moment does not have the required bollard pull to tow a vessel of that size.The Pacific Dolphin has a Bollard Pull of 220 tons.She will safely tow the Tanker to Durban.
    Looking on Ship Finder the tanker and small tug are still off Port St Johns.The Pacific Dolphin is south of PE doing 11.5 knots.
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    Default Re: Oil Tanker in Distress.

    Bollard pull is an interesting [email protected] it doesnt sound like much. How many tons would be used to pull a huge ship like that?

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    Default Re: Oil Tanker in Distress.

    Quote Originally Posted by plunger View Post
    Bollard pull is an interesting [email protected] it doesnt sound like much. How many tons would be used to pull a huge ship like that?
    I have never put tons force as a requirement rather than kW power. Either way, I have no clue of required numbers. I just know that in spite of their big internal engines, they require quite a few km of stopping distance from full steam.


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    Default Re: Oil Tanker in Distress.

    Quote Originally Posted by mikeml View Post
    I have never put tons force as a requirement rather than kW power. Either way, I have no clue of required numbers. I just know that in spite of their big internal engines, they require quite a few km of stopping distance from full steam.
    I would have said that pulling force is the ideal measurement of a tug and that power was actually somewhat irrelevant. For instance a F1 produces awesome power, but is hardly the tool of choice for pushing Boeing’s around the apron. The ships issue is going to be getting power into the water through a screw designed for high speed operation. The typical duty of a tug would make speed a non issue and therefore to large degree power. In outboards this is often referred to as holeshot. The “torque” with which the engine can get you out the hole and on the plane. Once there screws with a more aggressive pitch will give you more speed. Tugs often run shrouded variable speed props for this reason.

    As for pull, 220t is some serious force. Think about how easily you can manhandle a floating boat, but can’t even lift a corner on the ground.

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    Default Re: Oil Tanker in Distress.

    Quote Originally Posted by plunger View Post
    Bollard pull is an interesting [email protected] it doesnt sound like much. How many tons would be used to pull a huge ship like that?
    There was an idea floated back in the 70s/80s for a few Sikorsky CH53 helicopters to be stationed in South Africa in the event of a large tanker or bulk carrier getting into difficulties. The theory was that 2 machines would connect to the vessel with lines from the cargo hooks, and they would "anchor" the vessel until a tug could be brought on scene. The machines would rotate out with reserve machines to allow refueling and crew changes.


    Bollard pull is a conventional measure of the pulling (or towing) power of a watercraft. It is defined as the force (in tons or kilonewtons (kN)) exerted by a vessel under full power, on a shore-mounted bollard through a tow-line, commonly measured in a practical test (but sometimes simulated) under test conditions that include calm water, no tide, level trim, and sufficient depth and side clearance for a free propeller stream. Like the horsepower or mileage rating of a car, it is a convenient but idealized number that must be adjusted for operating conditions that differ from the test. The bollard pull of a vessel may be reported as two numbers, the static or maximum bollard pull - the highest force measured - and the steady or continuous bollard pull, the average of measurements over an interval of, for example, 10 minutes. An equivalent measurement on land is known as drawbar pull, or tractive force, which is used to measure the total horizontal force generated by a locomotive, a piece of heavy machinery such as a tractor, or a truck, (specifically a ballast tractor), which is utilized to move a load.

    Bollard pull is primarily (but not only) used for measuring the strength of tugboats, with the largest commercial harbour tugboats in the 2000-2010s having around 60 to 65 short tons-force (530–580 kN; 54–59 tf) of bollard pull, which is described as 15 short tons-force (130 kN; 14 tf) above "normal" tugboats.[1][2]. The worlds strongest tug is Island Victory (Vard Brevik 831) of Island Offshore, with a bollard pull of 477 tonnes-force (526 short tons-force; 4,680 kN). Island Victory is not a typical tug, rather it is a special class of ship used in the petroleum industry called an Anchor Handling Tug Supply vessel.
    https://en.wikipedia.org/wiki/Bollard_pull
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    Default Re: Oil Tanker in Distress.

    Quite a while ago I watched a documentary on Youtube about tug boats, I must actually look that up again, it was very interesting how these things work.
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    Default Re: Oil Tanker in Distress.

    South Africa used to have 2 of the strongest salvage tugs in the world at one stage.They were purposely built when the Suez Canal was closed.
    Wolraad Woltemade and the John Ross.
    Both tugs performed many big salvage operations and were often contracted out to do long distance ocean tows in the SA summer months.Winter time they were stationed in Cape Town and on standby to leave at very short notice.These tugs were 150 Ton bollard pull and were considered huge 30 years ago.
    They were both single engined tugs and as seafarers will know its far easier to maneuver a twin propellor ship than it was for the Captains to maneuver these single engined tugs.Often in really bad seas.One of the ex Captains of the John Ross became a very famous salvage master.
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    Default Re: Oil Tanker in Distress.

    Quote Originally Posted by NewLandy View Post
    Should we be saving the communists?
    2 questions:

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    Default Re: Oil Tanker in Distress.

    Tug is now off Kenton. You can follow it on vesselfinder. Serious piece of kit this little boat.
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