Category talk:Ships by IMO number

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This category was created in order to group all files of sea-going ships. An IMO number doesn't change in the lifetime of a ship as name, owner, call sighn etc. do. So it is possible that you find ships with different names here, as the IMO number is the same, it is the same ship. --Stunteltje (talk) 09:56, 16 November 2008 (UTC)


I think using templates would be useful to standardize and internationalize infos. However I have no knowledge about ship. I could copy Wikipedia but internationalizing would certainly not be easy. So I have created templates using info that were used in categories: {{ship}}, plus two auxiliary templates to make translations easier: {{ShipEvent}} and {{Ship type}}. See three testcases. Is someone more knowledgeable than me willing to develop those templates ?--Zolo (talk) 11:43, 20 August 2011 (UTC)

I don't have any knowledge of templates. But it looks to me nice and easy to use them. I have a few suggestions. My problem is always the tonnage. We have different ones: BRT, GRT, NET and so on. I think every possiblity must be given, as you never know what you will find looking for data of a ship. We use the International System of Units, so perhaps automatic calculation can be done if necessary. History must be free to edit, I think, as it gives every possibility to make any remark. And perhaps a remark-possibility is of value. It was not the intention of the category to give all information on a ship, as we have the Wikipedi's by language for that. But the basic facts can be gathered here to support making fast and easy new subjects bij name of a ship for those Wikipedia's. --Stunteltje (talk) 14:41, 20 August 2011 (UTC)
Thanks for the feedback.
I will add other tonnages, could you provide an exhaustive list ?
By "remark-possibility" you mean some comments about the ship ? Would the description parameter added in Category:IMO 5014123 sound okay ?
The history parameter is free to edit: I have added an optional {{ShipEvent}} to use inside for better internationalization. I am not yet satified with it and try to make it better but it is likely that it wont be able to handle all cases.
About the unit, Wikipedia uses a "convert template" that provides automatic translation. It is rather complex, and for various reasons I think it would be hard to maintain on Commons if the users had no choice about the input unit (I just need to be sure about which one to use). On the other hand the output unit is easier to customize (English users already see the length in both meters and yards in Category:IMO 0100052). --Zolo (talk) 16:21, 20 August 2011 (UTC)
I am not a specialist in these tonnages, unfortunately. My inland waterway vessel can load 83 tons, I don't know how to convert this to tons for sea-going vessels. For the conversion of units i cite the English wiki for SI-units: The system has been nearly globally adopted. Three principal exceptions are the United States, Liberia and Myanmar (Burma). So for world-wide use we have to stick to SI-units. In scientific US no problem at all, is my experience. --Stunteltje (talk) 16:51, 20 August 2011 (UTC)
I have just seen the Wikipedia tonnage article. I suppose I can use all measurements that are given there. From what I understand no unit is given for gross tonnage etc (it is always 2.83m3). For displacement or deadweight tonnage I suppose we can use SI tonnes.--Zolo (talk) 11:17, 21 August 2011 (UTC)
Should I use the SI km/h, even if knots seem to be much more widely used ?--Zolo (talk) 17:40, 21 August 2011 (UTC)
Speed in knots, as it is easier calculating in m/sec. In shipping and air traffic knots are the standard. --Stunteltje (talk) 18:44, 21 August 2011 (UTC)
Ok. Mostly finished now (I still have to enhance layout). Translations can be added at {{ship/i18n}}, {{ShipEvent/i18n}} and {{Ship type}}. What are "NET" and "GRT" in IMO 0100228 ? Are they the same as Net tonnage and BRT ? --Zolo (talk) 06:56, 22 August 2011 (UTC)
Exact my problem. I don't know the differences in international measured tons. (Go out for painting my barge. Very nice weather here. Back tonight.) --Stunteltje (talk) 07:03, 22 August 2011 (UTC)
Okay. Ah apparently BRT is the same as GRT. Still another question ? What exactly is the yard number, and can we find a list on the internet ? --Zolo (talk) 13:51, 22 August 2011 (UTC)
There are 5 or 6 that use Special:WhatLinksHere/User:Heb/Shipinfo. --  Docu  at 05:53, 27 August 2011 (UTC)
I have merged the two templates. {{Ship}} is becoming rather expensive, but since it is in categories where there is not much other content, it should still be acceptable. I have also tried to keep the template easy to use (no template to used inside except for the optional use of {{ShipEvent}} in the history parameter).--Zolo (talk) 10:10, 30 October 2011 (UTC)
OK. Would you consider limiting {{ship}} to category namespace (or at least exclude file namespace)?
BTW, as this is Commons, I don't think {{ship}} needs an image. We got the category for this. --  Docu  at 10:40, 30 October 2011 (UTC)
I have added "namespace=Category" in the documentation. If you think the template should be disabled alotogether in the file namespace, feel free to do it in the template. I dont know about the photo. by IMO number categories often do not have any photograph directly (we have to look in the subcats). So I think the image gives a good idea of the boat.--Zolo (talk) 11:34, 30 October 2011 (UTC)

IMO only[edit]

Ships by IMO number only has been updated. It now includes all 1509 categories of 7430 Ships by IMO number which don't have a subcategory in Category:Ships by name.

New ones should appear on New ships. --  Docu  at 17:59, 9 April 2012 (UTC)

Templates again[edit]

As for the template talk above, is it really necessary to maintain these large datasets here on category pages instead of just linking to correspoding Wikipedia articles? 18:47, 22 May 2012 (UTC)

Yes. --  Docu  at 18:49, 22 May 2012 (UTC)
Most would probably not considered eligible for a Wikipedia article.--Zolo (talk) 20:58, 22 May 2012 (UTC)