Gen Con Events 2026

The I's Have It: Japanese Submarine Development in the Interwar Years

TitleThe I's Have It: Japanese Submarine Development in the Interwar Years
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Game CodeSEM26ND319895
Start DateThursday July 30, 2026 - 4:00 pm
End DateThursday July 30, 2026 - 5:00 pm
Cost$0
Tickets Available120/120
Short DescriptionJapanese inter-war submarine program. Japan made a major investment in these I-boats, but got little return on it. What went wrong? Capt. Mark McDonagh, USN/ret., former submarine officer, NSDMG staff
Long DescriptionCommissioned 100 years ago, the Japanese submarine I-52 was a prototype of a new series of open-ocean submarines expected to fight the US for control of the Pacific. Based on captured German WW I cruiser submarines, it was used for experimentation but scrapped as obsolete early in the Pacific War. Lecture will examine the origins of the Japanese inter-war submarine design program from strategic requirements to design and tactical capabilities, leading from I-52 to the large I-boats that fought in the war. Japan had made a major commitment to a large, diverse submarine force but unlike other major naval powers this force did not meet expectations. What worked and what went wrong? Presented by Capt. Mark McDonagh, USN/ret., physicist and former nuclear submarine officer with 12 years' experience at the Naval War College, on the National Security Decision Making Game staff.
Event TypeSEM - Seminar
Game System
Rules Edition
Group/CompanyNational Security Decision Making (NSDM) Inc.
Minimum Players5
Maximum Players120
Age RequiredEveryone (6+)
Experience RequiredNone (You've never played before - rules will be taught)
LocationLe Meridien
RoomLatitude
TableNSDM HQ
GM NamesMerle Robinson, Mark McDonagh, NSDM, Michael Tucker, Jason Corner, Evan Siegling, Ryan Good, Ronald Homer, Shawn Kratzert, Gail Berry
Web Addresswww.facebook.com/NSDM-The-National-Security-Decision-Making-Game-187557132044
Email Contact[email protected]
Tournament0