From the publishers site:

NWS: Modern Naval Conflicts Series is a NWS Team designed next generation comprehensive naval wargame covering the hypothetical major naval battles of WW3 with the ability to create unlimited custom scenarios.

Features for the MNC:1970s edition (expansions will add additional time frames, regions, navies, etc.):

6 - 11" x 17" full color cardstock maps covering over 1.5 million square nm of the GIUK naval theater. Total map size 33" x 34"
25nm map hex scale and 5nm-scale tactical formation display for resolving closer range combat.
Time frame/area for the first edition is 1970-1980 / GIUK AOA with other time frames/locations planned for future editions.
Rapid fire combat resolution allowing players to handle even large naval engagements in just a few hours.
Forces will included: United States, Great Britain, and Soviet Union. More countries planned for published expansions.
Detailed data for 140+ ship/submarine classes, 100+ aircraft types, and 50+ land units included.
Streamlined, detailed, and easy to follow combat mechanics including basic, advanced, and optional rules.
Full color professionally printed and mounted 560 - 1/2" aircraft, ship, sub, etc. combat unit counters
52 page rules manual. Scenarios are available on the CD-ROM included with the game.
17 cardstock sheets with color-coded Reference Tables covering all dimensions of sub, surface, and aerial combat, sensors, and electronic warfare.
8 x Formation Displays on heavy cardstock.
CD-ROM with complete unit data/record sheets, scenarios, and other files (All in PDF format).
Combat examples included for easy understanding of how the rules work during game play as well as quick reference modifier charts.
2 ten-sided dice.
Very flexible design that can be played as a board game or with miniatures. Rules, counters, and other materials will be useable with all other MNC series games.

1980s Expansion information link
http://www.navalwarfare.net/mnc.html

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