Talk:DVLPMT

Agreed by SNPWG8

jens 18:31, 25 October 2009 (UTC)
propose to delete "the development that is planned or". That has no affect on the present. Mariners using the information are interested in the present or nearest future. Both are fixed by "in progress".

raphael 06:05, 2 November 2009 (UTC):
Advance notices of approved projects? U.S. Local Notices to Mariners (issues by the US Coast Guard) have a section for this.

jens 10:34, 2 November 2009 (UTC), That might be correct. I am not much familiar with the US NtM. However, the question is how much can this information help the mariner when planning, approaching or navigating within that particular area? If the work is in progress, no doubt, that have certain affect, but the information that a "project is planned (approved)"? No, I don't think so.

raphael 14:57, 2 November 2009 (UTC): I will see if I can find anything (symbology, examples, ...) about depictions or mentions of planned construction.

raphael 19:13, 2 November 2009 (UTC): Here is some information.

M4 B.329 is about "Works under construction and projected". 329.6 supports you: "work projected shall not be inserted on charts unless it is about to begin, in which case it shall be indicated as work under construction."

S-57 attribute CONDTN has a value 5 = planned construction. The S-57 "Use of Object Catalog" mentions projected works in 4.6.10, "Works in progress and projected". Clauses 11.5.1 (Submarine cables); 11.5.2 (Overhead cables) and 11.6.1 (Pipelines, submarine or on land) and 11.6.3 (overhead pipelines) mention CONDTN= 5 (planned construction).

It seems that the intent is that planned work is supposed to be shown on charts but only when it is about to begin. Whether publications should adopt the same rule is something the group may want to discuss. As for actual practice in ENCs, I do not recall seeing any planned construction depicted in ENCs.