Predator class, going for space.
When I entered the Industrial Age in 430 AD, I was still in a phony war with the Hittites. I had control of most of my home continent, and the Hittites were set up to be my research partner and controlled most of their continent.
Upon entering the Industrial Age, I signed peace with the Hittites and gifted them up so they could immediately start Nationalism and the optional techs following it, and then hopefully still get me Replaceable Parts and Flight. Of course, I gifted the Babylonians up as well – they get Medicine, so I went full speed toward Steam Power.
I also redeclared on the Iroquois by sinking a galley with a carrack to start my Golden Age. My Golden Age enabled me to knock Steam Power down to 5 turns, and it also boosted my production of knights so that the Iroquois war started going faster. I captured the last Iroquois city in 610, but they still had a settler somewhere – the Iroquois lasted over 600 years (all the way until the end of the game) without ever founding a new capital.
After discovering Steam Power in 470, I learned the awful truth that there was not a single source of coal on my entire continent. The good news was that the Hittites had expanded enough so that they had 3 sources of coal within their borders; the bad news was that they didn’t have a road on even 1 of them yet. I immediately gave them Steam Power hoping that they would connect it faster, but it was 640 AD before I finally managed to trade for an extra source and start railroading.
My major mistake of the Industrial Age was letting the Hittites destroy Babylon. I knew I wanted to give the Babs a city on my continent and protect them, but I kept forgetting, and in 530, the Hittites eliminated Babylon costing me a free Modern Age tech. The Hittites also eliminated England, but nobody missed them.
My Industrial Age research was:
470 – Steam Power (5 turns).
520 – Electricity (5).
560 – Scientific Method (4).
600 – Industrialization (4).
640 – Corporation (4).
680 – Steel (4).
730 – Refining (5).
750 – Trade for Replaceable Parts.
780 – Combustion(5).
820 – Mass Production (4)
860 – Motorized Transportation (4).
900 – Atomic Theory (4).
940 – Electronics (4).
960 – Trade for Flight with 2 turns to go on it myself and enter the Modern Age.
The same turn as entering the Modern Age, I completed the Theory of Evolution picking up Computers and Miniaturization. Due to a horribly mistimed prebuild, it was another 9 turns before I completed the Internet, but my scientist farms were so effective that I could do 4-turn research without it for a couple techs.
I was really looking forward to the AI actually providing some Modern Age techs for once. The Hittites were a commercial civ with a very large land area on Emperor level, but I completed Ecology, Synthetic Fibers, Fission, Nuclear Power, and I was partway through the Laser before they finally showed up with Rocketry in 1150 (they also provided such wonderful techs as Sanitation and Amphibious War).
After trading for Rocketry, I found that civ_steve was also kind enough not to have a single source of aluminum on our continent. Fortunately, once again the Hittites had multiple sources so I could trade for it.
Four turn techs throughout the Modern Age and only Rocketry from the AI gave me a launch date of 1290.
My research section: