Talk:Squat effect

Squat (shipping term)

Squat (shipping term) is an older article on the same subject. Kablammo (talk) 09:43, 4 October 2008 (UTC)

I have combined the content (eliminating duplication) and redirected Squat (Shipping term) to Squat Effect. Roregan (talk) 05:21, 5 October 2008 (UTC)

Reader's feedback

Moved from article, see this edit

>>> This article is seriously flawed and should be removed for the following reasons: (1) While "Squat" is a common term used in naval architecture "squat effect" is a term that seems to be made up by the authors of this wiki page and a few others on the internet but not in any hydrodynamics offices... (2) References do not support the text (3) The "Bernoulli effect" explanation is just plain wrong. It is the wave pattern around the ship that causes squat. >>>

Moved by --Tito Dutta (talk) 17:04, 24 January 2013 (UTC)

I would disagree that waves are the cause, because wave amplitudes and periods are insignificant, in the case where this effect would be seen, compared to large ships' sizes. The diagrams are actually misleading in this respect.--Jasper Deng (talk) 06:22, 3 November 2013 (UTC)

Allure of the Seas

According to the article of Allure of the Seas, it was this ship, not her sister ship Oasis of the Seas, that passed under the low bridge. Or perhaps they both did, but in any case, they are almost identical, and the article on the Allure specifically says it was the Allure, and that the whole story about the squat effect being the only thing that allowed sufficient clearance is a myth created by sensationalist media types, who claimed that the funnels only cleared the bridge by a foot, when in reality it was several meters, meaning that it would have had sufficient clearance regardless. This means that any squat effect present had no impact on whether the ship could clear the bridge. I added a statement to this effect on the main page, but for some reason I am unable to add any references; when I click "edit section", it just shows text saying "/references", and in Beta, it just gives me a template that doesn't seem to do anything at all..45Colt 03:54, 9 November 2015 (UTC)

External links modified (January 2018)

Hello fellow Wikipedians,

I have just modified 2 external links on Squat effect. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

• Added archive https://web.archive.org/web/20100620204702/http://www.oasisoftheseas.com/ to http://www.oasisoftheseas.com/
• Added archive https://web.archive.org/web/20091103162925/http://www.kn-online.de/top_themen/121028-Oasis-of-the-Seas-hat-Kurs-auf-Fehmarn.html to http://www.kn-online.de/top_themen/121028-Oasis-of-the-Seas-hat-Kurs-auf-Fehmarn.html

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 5 June 2024).

• If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
• If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 02:06, 24 January 2018 (UTC)

Squat in channels with muddy/silty bottoms

Squat as described here is only true in deep water or channels without a muddy/silted bottom. In those channels, the ship sinks until the hull begins to penetrate the area of increased density near the bottom. When that happens the buoyancy of the water begins to offset the effect of squat. Eventually, there is an equilibrium where the upward force of increased buoyancy equals the downward force from the squat effect. The ship continues without running aground. I was a ship pilot for 30 years in Houston and very often ran large ships with less than a meter UKC clearance at speeds up to 12 knots across Galveston Bay without incident.

Pilot associations were aware of the failure of the squat formula to predict draft of moving ships in their channels for many years. Finally the pilots in the Europe persuaded scientists at Ghent University in Belgium to investigate. They were able to verify the empirical findings of pilots and offered an elegant explanation. There were a series of papers written on the subject by Guillaume DELEFORTRIE Flanders Hydraulics Research, Antwerp, Belgium and Marc VANTORRE Maritime Technology Division, Ghent University, Ghent, Belgium LouisVest (talk) 20:05, 11 November 2025 (UTC)