Victory At Sea Meaning

(idiomatic) Ocean conditions very windblown and messy, possibly to the point of being inimical to surfing and other water sports.

Example: 1995, Tom Tweed, 1/5/95 sd cali. surf 7-8' onshore slop in alt.surfing [1]
  It is total "Victory at Sea" out there today- 17 to 25 knot onshore winds kicking up big. messy windswell/chop everywhere.
1998, Jim Shuck, Watercraft World Recap in rec.sport.jetski [2]
  It is extremely fast and comfortable to ride in 2 foot chop like we had in the ocean today. It will still run near 60 in that "victory at sea" if one can hang on.
2004, Vans Triple Crown press release 11.16.2004 [3]
  A diminishing swell Saturday led officials to call for a lay day, then a strong on-shore storm system moved through overnight leaving victory at sea conditions yesterday.
2005, Glenn Woodell, Omaezaki? in rec.windsurfing [4]
  It's not Maui, but wind swell becoming Victory At Sea conditions on the outside as it goes 4.2.
2011, National Weather Service, Area Forecast Discussion Tallahassee FL 11:28 AM EDT Mon Sep 5 2011 [5]
  HIGH SURF AND DANGEROUS RIP CURRENTS CONTINUE TODAY WITH VICTORY AT SEA CONDITIONS. SOME BEACH EROSION HAS LIKELY OCCURRED OVER IN THE PANHANDLE.