When I was a new mate in 70's, captain told me make a route from Norway to Rotterdam; not passing any platforms closer than 1,5 n.m. Already then it was impossible. He wanted to be on bridge 8 hours before pilot, now I'm on a ship of similar size; my mate take pilot when necessary, and go alongside. The years I was mate, I seldom see captain on bridge; normally they sleep when we go alongside, some say the don*t speek too good english, so they stay away. So I can sleep, and wake up to immigrations etc.
But now the mate can take care of that also: as me and the mate go 6-to-6 watches, it is no difference who is on the bridge.
In my company, a quite large one, we go 6-6 watches, mate go alongside;take pilot etc; and opposite.Regarding passing distance; it is impossible to say in a forum. We always get closer to another vessel when we approach a separation zone, and then I don't have any problems with abt. 0,2 miles. 'But normally I like at least 0,5miles for safe trading; if less I use VHF.
No difference in job; only in payment..
Rgds. Arne