The rules are ok while the supplements have good information on Japan’s feudal system. The advantage is the rules are simple. The disadvantage is that it requires having little figurines (although using Risk pieces work).
This requires one of two things–>money to purchase ship miniatures -OR- time, which can be used to xerox/create ship silhouettes. For a classroom budget, silhouettes are probably more efficient, and students could even be assigned creating the silhouettes, researching ships, etc. before playing. For an added twist, anyone who has a ship sunk has to have their assignment torn up! This recreates hesitation at throwing ships in to battle willy-nilly and creates a very realistic hesitation.
First edition tends to be directly tied with the World in Flames boardgame (making it harder to implement). This gives a good overview of the buildup to war, but requires some tinkering for classroom use.
These cover various aspects of navy fighting at the turn of the 20th century. They are interesting for their discussions of the U.S. Navy Color Plans. These are easier to use if the teacher is already a â€œgamerâ€.