DARPA funding opportunity: Sea Train [pdf]
beta.sam.gov
beta.sam.gov
If you're interested in this, I recommend you also check out the NOMARS opportunity (1), the solicitations for which are only offset by approximately 1-month.
It's an interesting time for ocean going vessels. In my opinion, ship autonomy is ushering the biggest advancement in marine engineering since the advent of cargo containerization (and before that the switch from sail to propellers). Not the autonomy itself, per se, rather it's what autonomy allows in terms of new flexibility of hull form, power and propulsion design.
1. https://beta.sam.gov/opp/dc4233cf116e4852ba4c7b436db95ae2/vi...