<div dir="ltr">Also,<br><div class="gmail_extra"><br></div><div class="gmail_extra">Part of my problem was I was overthinking Cochran. The computer is quite sophisticated and it clearly feels designed by an innovator and engineer who might try to stuff bits anywhere. It has rough edges so I doubt any usability expert or ergonomics person has had any input. And, yes, it does sense salt/fresh water.<br>
<br></div><div class="gmail_extra">I purchased the Cochran EMC-20H after a recommended from a friend of a friend and after the friend purchased and dove it while we were both in the tropics. It was far more liberal than his Mares Icon and my Suunto Vyper II giving more than 10 minutes of NDL over my dive computer on dives later in the day. It has 50 increments of conservatism. Zero seems to be Navy Tables (on the first dive) while 20 seems to be close to PADI tables and 45 is close to Suunto.<br>
<br></div><div class="gmail_extra">After looking at the material it seemed like the Cochran algorithm is for engineers where algos like the Suunto and Mares are for lawyers. Well that or Mike Cochran has learned how to alter physics or dive physiology. Maybe it just draws a better "Texas bullseye" around the test dive data.<br>
<br></div><div class="gmail_extra">The company claims that they were first to release many features and are still the only DC that offers some features like workload compensation (based on gas consumption), water temperature compensation (colder = more metabolically active), a flight data recorder in the DC (giving a N2 credit for diving after flying), and the ability to clone tissue loads to other dive computers.<br>
<br>Now in reality not much of that is very useful to me but I like the idea that they are doing what I thought DCs should do, and that was 8 years ago after OW cert. But 18 navies around the world are attracted to those features, that's impressive to me.<br>
<br></div><div class="gmail_extra">The one big reason I discounted bright and shiny computers like Shearwater, Liquivision and OSTC was the battery life. I have enough rechargeables to deal with in my life the last thing I need is to arrive at a dive site with a dead battery. The Cochran batteries last 2 years or 1000 dive hours, that bullet point is near the top of the list for me.<br>
</div><div class="gmail_extra"><br>-- <br><div dir="ltr"><div>John Van Ostrand<br></div><div>At large on sabbatical<br></div><br></div>
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