Man overboard in Horizon

[Elaine5715]

10 hours ago, shdwgrl1 said:

It was just announced that the person passed away and their body was recovered.

 

10 hours ago, Bandman said:

Captain just announced the Cost Guard recovered the body. 
 

While sad, it gives closure and not thinking your family member is out there, still alive, lost at sea. 

[ray98]

These things come in spurts.  Someone does it, it makes big news and gets people talking, other people then seek it out as an option.  The cycle will continue.

[Lane Hog]

3 hours ago, chengkp75 said:

Gee, here I thought all propellers were "under the hull and well below the waterline".  And, with an azipod drawing water in from an angle to the side, as the ship steers, rather than from straight ahead as a traditional prop does, you increase the likelihood of being sucked in. 

 

So much wrong in one sentence...

 

1) Traditional shaft driven props are not below the hull because they exit a few feet above the keel.  Only the bottom arc of their rotation is below the keel while rotating.  Thus not under the hull.

 

2) With an empty bulk carrier or tanker, its not uncommon for the tips of the prop to break the waterline at the top of their rotation.  Thus not always under the waterline. 

 

3) The GPS path shared showed the ship moving in a straight line, so no, the azipods wouldn't be rotated to the side.... they'd be aligned with the keel.

 

4) Water pulled into the blades will come from the area with the least amount of friction  e.g. open spaces in front and below the keel. It won't be pulled down from the surface at the same velocity because of friction with the hull. 

 

If there are 6-20 feet of hull vertically between you and the prop, the chances of getting pulled that far down (especially with sea water vs human buoyancy) are slim to none.  Add in Bernoulli effect due to the moving hull, and chances are you'll be pushed to the side and into open water.

 

No need for Mythbusters to debunk this one when the physics are clearer than the myth.

Regardless of the theoreticals, CG recovered a complete body.

 

 

[ray98]

3 minutes ago, Lane Hog said:

 

So much wrong in one sentence...

 

1) Traditional shaft driven props are not below the hull because they exit a few feet above the keel.  Only the bottom arc of their rotation is below the keel while rotating.  Thus not under the hull.

 

2) With an empty bulk carrier or tanker, its not uncommon for the tips of the prop to break the waterline at the top of their rotation.  Thus not always under the waterline. 

 

3) The GPS path shared showed the ship moving in a straight line, so no, the azipods wouldn't be rotated to the side.... they'd be aligned with the keel.

 

4) Water pulled into the blades will come from the area with the least amount of friction  e.g. open spaces in front and below the keel. It won't be pulled down from the surface at the same velocity because of friction with the hull. 

 

If there are 6-20 feet of hull vertically between you and the prop, the chances of getting pulled that far down (especially with sea water vs human buoyancy) are slim to none.  Add in Bernoulli effect due to the moving hull, and chances are you'll be pushed to the side and into open water.

 

No need for Mythbusters to debunk this one when the physics are clearer than the myth.

Regardless of the theoreticals, CG recovered a complete body.

 

 

 

LOL....I don't thing you know who you are attempting to argue with.

[chengkp75]

Let's see:

 

3 minutes ago, Lane Hog said:

1) Traditional shaft driven props are not below the hull because they exit a few feet above the keel.  Only the bottom arc of their rotation is below the keel while rotating.  Thus not under the hull.

While they are not below the keel, they are below the hull in the place where the propellers are, or do you think they project behind the ship?  And, do you think that azipods extend below the keel, because they don't, they are below the hull where the propellers are.

 

5 minutes ago, Lane Hog said:

3) The GPS path shared showed the ship moving in a straight line, so no, the azipods wouldn't be rotated to the side.... they'd be aligned with the keel.

How little you know about how a ship steers, especially with azipods.  With a rudder, there are constant small swings of the rudder to maintain course, but this affects the water flow behind the propeller and the ship, while with azipods, the propeller swings slightly back and forth, side to side,just like the rudder to maintain course, and this causes the water flow into the azipods to sweep back and forth, from side to side, and which produces the well known "azipod shimmy".

 

9 minutes ago, Lane Hog said:

If there are 6-20 feet of hull vertically between you and the prop, the chances of getting pulled that far down (especially with sea water vs human buoyancy) are slim to none.  Add in Bernoulli effect due to the moving hull, and chances are you'll be pushed to the side and into open water.

This is what I stated for another poster.  However, if you've ever seen a ship with azipods steering, or a river tug with "flanking rudders" (rudders in front of the propellers), you will see that if the water flow into the propeller is from the side (as noted above, even steering a "straight course"), there will be a noticeable reduction in water level at the side of the ship as the water is sucked into the propeller faster than it can flow from alongside the ship.  Common phenomenon. 

 

15 minutes ago, Lane Hog said:

Add in Bernoulli effect due to the moving hull, and chances are you'll be pushed to the side and into open water.

Let me think back to physics, but I remember Bernoulli's effect to be creating a low pressure when the fluid speeds up.  That is what tends to suck a ship into the side of a channel, much as the Ever Given did in the Suez canal.  It is, instead, the displacement of water by the volume of the hull that creates a wave (wake) that will tend to throw the person away from the hull, not Bernoulli's principal.

[puppycanducruise]

Tragic news.  Prayers for the families and friends.

[BubbaD123]

1 hour ago, nol4am said:

From an onboard source which I know there will be many stories but the man who fell was actually trying to stop the man from jumping and somehow he fell. Sad regardless 😢

JFC..

[rjrice1]

This is so very sad!!  

Depression and suicide has been on the rise!!  It comes in all shape, size and color.  

May the person rest in peace!!   Prayers to the family & friends