On Sat, 29 Jan 2005 11:57:31 -0500, Andrew C. Toppan
wrote:

On Sat, 29 Jan 2005 11:47:35 -0500, wrote:

Yup. And they are also slow and working against the clock

Slow is a relative thing; if one doesn't need to go far, speed is not
a problem. Time is not as much an issue as it once was; modern diesel
boats can stay under for quite a long time. This ain't WWII anymore.

Indeed. But once you go to battery you are working against a finite
limit. In WWII that limit may be been in the 24-36 hour range and by
'62 had progressed to the 96 hour range. I have no idea what it is
today. But that finite limit is still there.

If the sub is just trying to hide then the time can be long. If he
has to move that time dramatically shrinks.

Bill Kambic