Outbound by William Altmann

SFINCS

Long distance travel has always been challenging. From Columbus to Magellan to Rasinovsky and Chen Shan, each captain and crew had to face unknowns. The sponsors, planners, designers and forecasters could not anticipate everything. On this, the first trip to Tau Ceti, 11.7 light years from Sol, the challenges for the four members of the crew did not only come from outside the starship. They came from Henry's guts. Memories of things he'd never experienced plagued him. He, and he alone, had to wake from stasis.
There seemed to be nothing he or the others could do to suppress the memories. They ate at him, stole his sleep, drove him almost mad, and Titan was too far away to help. What kind of crisis loomed in the future: the brig, mutiny, suicide?
It would be a long flight.

Inbound: The Merimnae Saga by William Altmann

SPSFC 2023

This is the sequel to Outbound. The four are inbound into the Tau Ceti system. so is something else. Castor and Magellan have entered the Tau Ceti system. Henry's memory affliction is under control - for now. They must establish bases, come up with a long term plan to deal with the medical challenges, and decide how to accomplish their mission. Then they detect another ship coming toward them from Sol. Yet it sends no communications ahead to them.