This exact title–sans the number–goes way back to 2007 here. The orange vessel doing surveys in 2007 has been replaced by the one below, which I’d not seen until very recently.
The USACE has several survey boats in the boro, as
does Rogers.
Alpine Ocean has been surveying the harbor and the bight for some time now . . . with R/V Shearwater, which I’ve seen as far south as Norfolk.
Shearwater is 110′ loa; clearly here you see how Dina Polaris shrinks her size, the latter has five times the number of berths.
She was in briefly and out this past weekend, so I devote more space to her.
And while we’re in this general group, I couldn’t pass up this vessel, which I’ve not seen. She may be the one doing working on the WW2 tanker wreck Coimbra, 30 miles south of Shinnecock Inlet. Has anyone gotten photos of her?
All photos by Will Van Dorp, who wishes you all a happy may day . . .
tugster: a waterblog 
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May 1, 2019 at 7:56 pm
Les Sonnenmark
There is increasing use of small autonomous boats (some of them man-portable) to do survey work, especially in shallow areas and around piers, etc. They work sort like a Roomba, programmed to sweep a defined area until it’s all surveyed, then downloading the results. Some examples: https://www.asvglobal.com/geophysical-survey/.
Have you spotted any being used in the Sixth Boro?
May 2, 2019 at 7:18 pm
tugster
Les– Thx for this info. I’d not heard of it, but of course it makes sense. I’ll keep my ears on and eyes wide!
June 24, 2019 at 6:17 pm
bowsprite
Ooooh! Is the first boat Christina?
: )