IWC Porsche Design Ocean Collection Overview

IMHO, these are the some of the most advanced dive watches ever made.  They are among the first if not the first fully titanium watches when it was still a novel and difficult metal to work with.  The civilian models were water resistant to 2000 meters(!) in a thin and light watch case.  The military models were "only" required to be tested to 300 meters.

The civilian models all used modified ETA cal. 2892-A2 movements.

The military models used three movements depending on the reference: the modified ETA 2892-A2 with 21 or 22 jewels, the quartz IWC cal. 2250Q, and a special amagnetic movement.

The civilian models are the 5 in the back two rows.  From the top and moving clockwise are ref. 3504, 3500, 3524, 3524, and 3524.

These four in the front are the military models.  Clockwise from the top left: ref. 3319, 3509, 3529, and 3529.