[tesco samoa]

ships in two turns,,, those where the days....

The idea of the space yards is to get as many as possible going ( say 2 to 5 above each planet and get them building ships and use your planets to build infa structure then units to defend them then ships or build the big ships quickly on planets ) and build up your economics... Also this places a resupply above every planet and adds alittle defence and if you have 50 planets you could potentionaly have 100 to 250 ship yards building every turn.... And don't forget to max out the population on your planets for the production bonus..
And if your building alot of stuff on a planet build a space yard first...this will shorten the build time.