Improvements for existing shipping would add more immersive experience for seadogs:

-Deep sea fishing for later, industrial trawler

-Shipping crates and shipping containers filled with goods transfered into cargo ships only if there is a crane on radius

-Industrial cargo ships with change for modifications. Oiltank-module makes the cargo ship to accept oil based products, flatbed accepts containers. Each module installation needs to be done inside shipyard radius with timer

-If the ship breaks down middle of the sea, tugboat could go for fix or get the ship into shipyard radius

-Loading and unloading oil based products from truck to container to ship

As many of the planets are with many continents and wide seas it would be logical and great to have seaport-business fuzzling.