Note: all photos are clickable for best viewing
A couple weeks ago a Vietnamese friend and her niece made a trip out there with me on the Hydrofoil. I really enjoyed the ride, while you can't see much from inside, as its enclosed and air-conditioned but there are a couple areas mid ship where you can poke your head out. Gives you a up close look at the goings on of the harbor, tugs, ocean going container ships, strange little motorized barges, ferries, small and large fishing boats along with all the shore side activities. While my excitement wasn't shared with my Vietnamese friend, she said she felt sick the whole way. While her nice, unaffected by my exuberance and her aunts ills, slept.
The boats are pretty ratty looking when you see them up close, thinking there probably Russian built in the 1970's. It's pretty obvious not much has been invested in maintaining there appearance. You see that a lot here in Vietnam.
There are two boat company's Vina and Petro Express but the boats and fares are the same. Though there schedules are a little different with about 6 departures a day.