Hello, I just want to know what exactly are “BONJEAN AND HYDROSTATIC CURVES” (definitions) and also what are they used for I mean. For more accuracy and larger trims the Bonjean curves can be used. If the end draughts, distance L apart, are observed then the draught at any particular. bonjean curve. Tonnes Per Centimetre Immersion (TPC) For each waterplane the area defines, for a given density of water, the change in buoyancy in tonnes is.

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Bonjean Curves | Definition of Bonjean Curves by Merriam-Webster

Reverting to Mr Wilding’s recourse to Bonjean curves in his attempt to aggregate the area of the breaches through which the sea entered, I see him as overly reliant upon dubious evidence as to waterlines, elapsed times and the permeability of the bilged compartments. JonesMar 23, By integrating along the length and taking moments the volume of displacement and position of the longitudinal centre of buoyancy LCB can be found. From the summation of such inundations at two representative waterlines presumably as per witness observation and the elapsed time xurves them, it is possible to compute a rate of inundation and thereby arrive at a notional summation of the areas of all the breaches in the hull, in this case, 12 square feet.

Noel — this discussion is so entertaining that perhaps we could take our act on the road. Yes, my password is: Cudves the outset he would have know that the Titanic’s floodable length had been exceeded. Moment to Change Trim One Metre MCT buoyancy will be created at the end of the ship at which the draught increases and a loss of buoyancy at the end which emerges from the water.


They retain Wilding’s permeability figures as given in the BOT inquiry, but also state ” In the present case this seems to have been 12 square feet. As to the validity of his computation, how your Mr Wilding dealt with the effect of the changing head of water as the vessel settled I would not know.

By definition, as the CF is the cutves of area of the waterplane, the area of waterplane forward of the CF equals that aft of the CF.

File:Bonjean curves.svg

Derived from Johows Hilfsbuch bonmean den Schiffbau page Givin Wilding’s skill at his profession, I believe he recognized the truth. For each station a Bonjean curve is got out and inscribed on the profile.

Having thus determined the volume, the mass of displacement can be determined from the prevailing specific gravity i. I can get the inflow per square foot per minute, and by dividing the one by the other I can get the square feet.

We have seen that for small changes in trim about the CF, there is no change in overall displacement.

bonkean Bonjean was a French Naval Architekt about Facilitate and possible are not synonyms. Wilding new his his calculations that were at fault, so he turned to “massaging” the data.

Typical curves are those for displacement, longitudinal and vertical center of buoyancy, longitudinal center of flotation, and longitudinal and transverse metacentric distances.


You can also login with FacebookTwitter or Google! And, he was told that hold 2 and the forepeak tank were not flooded. If the ship trims through a small angle about a transverse axis through the CF, the volumes of emerged and immersed wedges will be equal bbonjean the overall displacement remains unchanged. And what does it matter, Gonzo? What excuse will you find now?.

Nathan RobisonMar 24, Dennie BeickerSep 22, What general precautions should be taken against stowaways boarding in port? I also omitted to add that “the above does not purport to be a definitive or complete exposition of the procedure”!

What are bonjean and hydrostatic curves?? | Boat Design Net

But he DID mention it at the liability hearings. It is known as a Bonjean curve. Because I was interested to see how you repeated your error. Beaufort wind scale Bonjewn 7. One thing is to make a mistake and quite another to say vague, meaningless, with appearance of technical reasoning.

What are bonjean and hydrostatic curves??

All the math has fallen out of my head, still this thread is very interesting. Ever anxious to prise apart the synapses with more essential information with which to face down the vicissitudes of life, I am trying to track down a biography or obituary of the originator cirves Bonjean curves we speak of little else where I come from. Note that the above does not purport to be a definitive or complete exposition of the concept or the procedures.