Bayesian sinking

[911 Rod]

No bilge pumps?

[greglepore]

Originally Posted by 911 Rod

No bilge pumps?

Bilge pumps are of no help if a vessel is on its side taking water. By design they are at the lowest point of the bilge and thus would be above where the water was.

The vents on a vessel this size for the genset and a/c are pretty darn big, and it wouldn't take enough water to sink the vessel immediately to keep it on its heeled at 45 degrees and taking on water til it rolled to 90 and sunk.

[masraum]

Originally Posted by Captain Ahab Jr

Not sure if this has been posted

Insights from a previous captain of the Bayesain

https://www.sailingscuttlebutt.com/2024/08/27/former-bayesian-captain-offers-insight/

Great, interesting article. Thanks for posting. And I learned something new - Lazarette.

[hcoles]

Interesting that a high percentage 80+?% of the stability is provided by the fixed ballast not the adjustable keel.

[3rd_gear_Ted]

Every Sea has their own localized weather compared to the Oceans.
In the Sea of Cortez MX, the local wind events with a water spout are called a Chubasco.
One almost flipped our parked single engine aircraft in San Carlos MX.

In the Med there are multiple wind event names based on wind direction. (see link)

What direction did the wind come from?

https://www.mediterranean-yachting.com/winds.htm

[911 Rod]

Originally Posted by greglepore

Bilge pumps are of no help if a vessel is on its side taking water. By design they are at the lowest point of the bilge and thus would be above where the water was.

The vents on a vessel this size for the genset and a/c are pretty darn big, and it wouldn't take enough water to sink the vessel immediately to keep it on its heeled at 45 degrees and taking on water til it rolled to 90 and sunk.

Really big bilge pumps

[Seahawk]

Originally Posted by masraum

Great, interesting article. Thanks for posting. And I learned something new - Lazarette.

I did as well. I especially enjoyed the “Stability information Book” discussion. Excellent.

I am changing my log in name, however: Perini Navi built Seahawk

[pwd72s]

From the article...what I tried to say in my post, but conveyed much better here:

"2. Ballast
The height of Bayesian’s mast was of course considered in the overall design of the boat by Perini’s engineers. To this end she was equipped with an extra 30T of lead ballast in her keel box (we’ll come to that in a bit) compared to the 56m ketch rigged sister ships. This was to counter the extra mass, higher center of gravity and higher center of effort (from sailing forces) that the sloop rig created.

The main lead ballast was contained in a more or less rectangular box (keel box) attached below the canoe shaped part of the hull. The precise mass of this ballast I do not recall, but it’s probably around 200T or so. In the center part of this box there is the moveable keel, which weighed around 60T and extended almost 6m below the keel box when lowered. This arrangement means that the majority of the righting moment of the vessel comes from the main ballast… the moveable keel acting more as a centerboard to reduce sideslip under sail (leeway)…"

[hcoles]

Originally Posted by pwd72s

From the article...what I tried to say in my post, but conveyed much better here:

"2. Ballast
The height of Bayesian’s mast was of course considered in the overall design of the boat by Perini’s engineers. To this end she was equipped with an extra 30T of lead ballast in her keel box (we’ll come to that in a bit) compared to the 56m ketch rigged sister ships. This was to counter the extra mass, higher center of gravity and higher center of effort (from sailing forces) that the sloop rig created.

The main lead ballast was contained in a more or less rectangular box (keel box) attached below the canoe shaped part of the hull. The precise mass of this ballast I do not recall, but it’s probably around 200T or so. In the center part of this box there is the moveable keel, which weighed around 60T and extended almost 6m below the keel box when lowered. This arrangement means that the majority of the righting moment of the vessel comes from the main ballast… the moveable keel acting more as a centerboard to reduce sideslip under sail (leeway)…"

Yes, that's what I heard. Probably the same source. The keel being down would have helped but not sure it would have been enough to save the ship.

[hcoles]

Two sources indicate the keel would be up at anchor:
1 - the keel makes a knocking noise when down at anchor
2 - the motion is softer with the keel up

[HobieMarty]

https://youtu.be/dqvkwPKuFxo?si=309uTYhKagQR14nZ

Sent from my SM-S916U using Tapatalk

[911 Rod]

Maybe it’s just me, but this guy seems to be dragging this on for clicks.

[hcoles]

Originally Posted by 911 Rod

Maybe it’s just me, but this guy seems to be dragging this on for clicks.

His channel is pretty much focused on super yachts. He does seem to have new information with each of his episodes.