FAILURE TO COMPLY WITH SID.

Narrative

BOTH CAPT AND FO WERE TOTALLY UNFAMILIAR WITH THE LOUPE 8 DEP OUT OF SJC ARPT. THE FO; WHO IS FAIRLY NEW; HAD HOWEVER; STUDIED THE DEP PLATE THE PREVIOUS EVENING AND HAD A GOOD IDEA OF THE PROC. THE FO WAS FLYING AND UPON REACHING THE 1.8 DME OFF SJC VOR; BEGAN HIS R TURN (AS DEPICTED) TO A 120 DEG HDG WITHIN 4 DME OF SJC. AT THIS POINT; THE CAPT MISREAD THE DEP PLATE AND PERSUADED THE FO THAT HE SHOULD BE ON THE 339 DEG RADIAL OUTBOUND FOR THE SACRAMENTO TRANSITION. WE TURNED BACK TO THE L TO INTERCEPT THE 339 DEG RADIAL AND HAD GONE OUT TO PERHAPS 7 OR 8 DME BEFORE THE BAY DEP CTLR ASKED WHERE WE WERE GOING. WE TOLD HIM; THEN HE POINTED OUT THE ERROR OF OUR WAY; TURNED US BACK SE TO REJOIN. NO APPARENT CONFLICT RESULTED. WE WERE LUCKY THAT NOTHING WORSE RESULTED FROM THIS COCKPIT RESOURCE MGMNT LAPSE. THE DEP PROC IS CONFUSING; HOWEVER; FOR A FIRST-TIME USER. IT ONLY BECOMES READILY APPARENT THAT EVERYONE MUST TURN SEBOUND AFTER READING ALL THE FINE PRINT VERY CAREFULLY. I THINK THE PROC SHOULD BE RE-DRAWN SO AS TO BE CLEARER TO A FIRST-TIME USER.