Mailing List Archive Mailing List Archive
>>orientation? to what? all the other large hunks of >metal? >>I was always taught < boy scouts, military, then >scuba> to take a bearing on >>an object in the distance and navigate to it. You >just cant do that in three >>ft vis, like on the Tiger that night, unless all you >intend on doing is >>shooting azmiuths especially when the vis is bad in >the entire water column< >>which does happen> and you cant rise above it. Al,not wishing to ruffle any feathers here but, G eorge is right (as usual). You descend on the wreck(dive site), vis is shit, maybe 3ft/10ft. First, orientate yourself and buddy. Take a bearing from compass, lets say its 090 degrees, which means you are heading east.Now before the dive you already know the lie of the wreck, i.e. east/west, north/south etc.So its easy to corellate the reading on compass to true.So you head off on your bearing, checking direction as you go, time as well.Return on reciprocal bearing, 270 degrees ,adjusting as you return. In shit vis you should be reeled off on shot line as well,your compass is your back up.Always take a bearing in case your line breaks/gets severed on sharp edges. Change in bearing should be timed off and return in elapsed time on reciprocal bearing to pick up original bearing, allowing for current run etc.Guys sail around the world using these gizmos, been doing it for hundreds of years now, still works regardless. Best, Jack. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]