Have a few questions that I can't seem to find the answers anywhere: 1. If I depart straight out from a runway with standard T/O minimums, am I protected against the "low close in obstacles"? Do departure minimums and ODPs protect me from the low close in obstacles? 2. How far out does Obstacle Clearance Surface (OCS) end? I've heard several answers. One being 25nm normally and 46 in mountainous areas. The other answer I've heard is that you supposed to be on a positive course guidance within 10NM departing straight out, and within 5NM after turning. And I've also read that that the OCS is unlimited. Thanks in advance!