I started a similar thread here about a month ago.
The browser hijack is new since Dominion Marine sold out to someone new, it occurs on some listings and not others. It affects all operating systems (Here I have Windows 10, Windows 7, Mac OS High Sierra, Ubuntu Desktop 16.04, iOS on Iphone 6 and Ipad Air - as I run a software development company).
My guess is that some new "feature" allows brokers to place HTML/JS in their listings and some of these brokers are hacked.
The photo viewer JS on iOS has ALWAYS sucked, and hangs up easily.
I haven't had this happen for several weeks but I haven't been looking at boats as much as usual.