Reasonable guess. It looks like there is a barge tied up directly aft of the small ship, possibly offloading/onloadin oil. The squarish, orange boat directly to the east looks like an oil skimmer.
Another possibility is the two ships are servicing an floating oil offload terminal. Notice the large tanker just to the northeast? It is unloading crude oil, almost certainly to the refinery just to the north. It's possible the smaller vessels are performing maintenance on another floating pipehead.
No Longer There 
Another possibility is the two ships are servicing an floating oil offload terminal. Notice the large tanker just to the northeast? It is unloading crude oil, almost certainly to the refinery just to the north. It's possible the smaller vessels are performing maintenance on another floating pipehead.