Friday, February 19, 2010

Estimating Ship's Gross Tonnage

On a past post I explained a simplified method to do an aproximate estimation of a ship's gross tonnage and an exact calculation of the compensated gross tonnage. Herein I enclose a simple input form to enter ship's main dimensions that produce results as explained in the mentioned past post.


Gross Tonnage GT, Compensated Gross Tonnage CGT

 

If you know the actual gross tonnage just input its value in the text box (cyan color), and click button "Calculate". If you don't know the actual gross tonnage, input ship's dimensions and click "Calculate"


Ship type 
Gross Tonnage GT:
Length PP (m):
Breadth (m):
Depth (m):
Block coefficient:


Result GT Result CGT

Monday, February 8, 2010

La Naval de Sestao entregó el buque Simon Stevin
Prototipo de buque tipo "Fall pipe"

En mi nota  de 5 Abril 2009 en este blog informaba sobre la construcción en La Naval de Sestao del buque 'Simon Stevin', del tipo "fall pipe", cuya misión es doble, por una parte depositar ordenada y precisamente piedras en el fondo del mar para obras de protección de cables y tuberías submarinos y para construcciones en plataformas de perforación y obras marítimas en general, y por otra parte, extraer minerales del fondo marino.

En esta foto se ve este buque en el muelle de La Naval  días antes de su salida hacia el dique.

 

Thursday, January 14, 2010

Ship models from Juan Ignacio Argaluza

In my post of 10 April 2008 in this blog I wrote a note about the historic racing yacht Hispania, recently rebuilt at Astilleros de Mallorca, recovering an authentic jewel of sport shipbuilding, of true both technical and historical interest.

A few days ago I was phoned
by  Juan Ignacio Argaluza, Getxo's neighbor like me, whom I did not meet before, informing me that he was building a model of the sail yacht Tuiga, twin of Hispania, and having read my blog note he had got an interest in commenting to me on some respects . A few days later I visited him at his home and he showed me the model of the Tuiga's hull , under construction, and told me he was finding some problems due to lack of ship's drawings that will guide his work.

Tuiga hull's model (click to zoom)


 Hispania at Astilleros de Mallorca