Wednesday, March 20, 2013

Preliminary dimensioning
Cargo ships

In my post of April 9, 2010, I presented a form to get a preliminary dimensioning of cargo ships once the user defined her type and a goal particular, deadweight, cargo volume or containers number, depending on the selected type. I have revised the form to be used and I present now its second edition.

To use this procedure click on following 

                                                   "CALCULATE"


Monday, March 11, 2013

Training Sail Vessels of Bilbao River
Speech from Juan José Alonso Verástegui

On last 6th March the Dr. Naval Architect D. Juan José Alonso Verástegui issued a presentation of subject theme in the "Maritime Museum Ría de Bilbao", within the acts to celebrate its 10th anniversary.



A full account of his presentation, together with my comments,  is to be found in my blog "Oteando desde Getxo", and a copy of his most important documents can be found hereafter.

Friday, March 8, 2013

Stability of deck barges and pontoons

In a previous post I included an approximate procedure to estimate the stability of cargo ships in the preliminary design stage, but a blog reader pointed out to me that it was not good enough for the special case of   deck barges and pontoons , which are artefacts carrying all load above the deck. Due to this so special condition these floaters (they are not conventional ships) have received a different stability consideration in the IMO  regulations and I have been preparing a specific procedure for estimation of their stability.




In the form that opens by clicking the following link, GetxoNaval ship dimensioning program is open and selecting the deck barges stability tag, the user is requested to input a few data of the barge / pontoon and he gets a suitable information about its stability in the specified loading condition. After the form a user guide is shown and a results interpretation.