Ice Station Zebra
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:53:11
Trace merging.
:53:13
Thin ice.
:53:16
Mark. Thick ice.
:53:18
Fifteen feet.
:53:20
Possible pressure ridge.
:53:26
Control, sonar.
:53:27
Heavy close-range clutter on my scope.
:53:30
Appears to be clear ahead.
:53:32
Mark. Thin ice.
:53:33
Three feet.
:53:35
Mark. Three feet.
:53:37
Mark, ridge, 18 feet.
:53:39
Thinning.
:53:41
Mark, thin.
:53:42
Four feet. Three feet.
:53:45
Trace merging.
:53:47
Three feet.
:53:48
- Speed?
- Three feet.

:53:50
One knot, captain.
:53:51
- All stop.
- Answering all stop.

:53:53
Rudder is amidships.
:53:55
- Still thin.
- All ahead one-third.

:53:57
- All ahead one-third.
- Belay that. All stop.

:53:59
Thin ice.
:54:01
- Three feet.
- Speed, zero.

:54:03
We're centered up now.
:54:09
At 100 feet, sir. Stop trim.
:54:12
Ed, bring her on up.
:54:15
Talk to me, Costigan.
:54:17
Thin ice. Thin ice.
:54:20
Why are we holding our breath?
:54:21
There's still 100 feet to go.
:54:23
Forty, measured from the bottom
of the keel.

:54:26
Forty feet minus the thickness of the ice,
whatever that is.

:54:32
Coming up fast, captain.
Eighty. Seventy-five.

:54:35
Stand by negative.
Chart for 80 to 90 feet, captain.

:54:37
Heavy ice. Heavy ice.
:54:56
Ninety feet. One-ten.

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