"singling up"

[mikebailey at speakeasy.net]

>Curious thing, though: Haven't we generally agreed that 
>"to single up all lines" means "preparing for departure"? 

_Knight's Modern Seamanship_ says in what seems to be the
only use of the phrase in the book

Single Up:  Take in all lines but a single standing part 
to each station, preparatory to getting under way.

It occurs to me that a similar transition might be necessary
when going from open sea into a harbor...

at least, the accompanying phrase "secure from sea detail" seems
to apply to both out- and in-ward bound

--- as in the following excerpts:
http://munkyfuzz.livejournal.com/
0500 November 27, 2006
Cold, Wet, Lonely. I don't want to do this. 5 am I know it starts soon, shit. The sky is gray out from the sun below the horizon.

"Single up all lines!"
There it is.
Single up all lines, aye!"

"All lines aft singled"
Halfway there.
Just six lines holding us to the USA. Just six lines holding me to home.

"Take in all lines!"
FUCK! That's the last one. 

"All lines aft on deck!"
"Underway, shift colors" The American flag, our flag, my flag is raised to the highest part of the ship.
Well I guess this it.

0530
We're pulling out of the harbor now, I can no longer see the pier that had supported us for months....
 0700
"Secure from sea and anchor detail"
Secured, we can all go in now, be warm, start our work or hit our racks. 


---- but, also and contrariwise:
http://www.fanfiction.net/s/3201492/1/

 ?There's the Gripper coming in now. She was out in the bay doing some trials when their brand fuckin' new SPS-73 surface radar went tits up, 'course it was after yesterday's fog rolled in, so they had to drop anchor and stay out all night. I guess the Captain didn't trust comin' in on GPS alone?the fuckin' channel's only a hundred yards wide at the deep parts?so some poor bastard had to ring the fuckin' ship's bell every two minutes. Come near to drove me crazy hearin' it from two miles away, it musta felt like a royal cluster-fuck to the poor bastards on board. It'll be another fuckin' hour before they secure from Sea and Anchor Detail, and I imagine the XO won't be able to get away until late tonight, and he'll be fuckin' pissed as hell when he gets home. "


-- I'm trying to find an online copy of the Bluejacket's Manual
to search, but so far no go.  Pynchon probably would have gotten
a free copy of this classic ?