This Dictionary is intended for a broad readership including practising naval architects who wish to acquire and apply knowledge of hydrodynamics and also physicists and theoretical hydrodynamicists who wish to apply their particular knowledge to the solution of ship problems.Engineering, physical and nautical terms in common use have not been included when did not require special definition in the context of ship hydrodynamics or when their meanings were self evident. The work is arranged in the following sections prefaced with a brief reference to the nature if their content:
The order of entry for each item is: title, symbol, dimensions, followed by the definition. In each section the titles are arranged in alphabetical order. In this way, having found the item required, perusal of the section will indicate other related items which may be of interest. For general reference, there is an overall alphabetical index of all titles and against each is given the section and page where the item is to be found.
The symbols given are in accordance with those in the latest ITTC symbols list which is a complementary document. In a number of instances, the list give alternative symbols and these are generally included except where a definite preference is indicated
Comments on the new Dictionary format:
The ITTC QS Group had already started a new Dictionary in A4 paper format in MSWord 2007-10. The current draft is also in .docx format for both the A4 and 81/2 by 11 inch versions. This is because some of the figures do not translate properly back to MSWord 2003. It is distributed in Acrobat format to make distribution and printing easier. References are found on pp 107-108.
For editing purposes, single column format is much preferred over double column format where entries tend to jump around, especially explanatory figures. Since this is to be a web based document, continuously updated (possibly in wiki style), single column format may be preferred even for the current status of the dictionary. Note also that the old Dictionary has the concept on a separate line which increases the size of the dictionary. The new material uses a hanging indent to set off the name of the entry in bold and/or italics.
Items needing clarification are those in red fonts. The figure captions need to be made independent of the order in which they appear in each edition. The ITTC Dictionary of Hydromechanics will be updated by the QS Group using both ITTC committee members and the wiki approach.