If we start getting 2* of incline from the sway. We get alarms at 1.5* and 3*. After 3.5* there is a possibility of the boat falling and the legs breaking away. We had no alarms today.
I operated a temporary manlift/elevator on the launch mount tower at SLC6 VAFB, the proposed west coast launch site for the shuttle. This is the tower right next to the launch mount, it doesn't roll away like some of the other equipment, it's permanent and engineered to withstand multiple launches. Massive iron and lots of it. Large party of USAF officials visit me one day and want a ride to the top so they can walk down to inspect/view the progress on the tower. The top landing was about 300', spectacular view by the way

. SLC6 is pretty much right on the beach, wind rarely stops completely, I had an operating limit of 40mph winds which I seldom reached. Take half the group up and turn them loose and go back for the other. In the second group was a rather attractive lady Captain

. We get to the top everyone files out. Lady Captain takes about 2 steps, I didn't even get the door at the landing closed, "Is this thing moving?" she asks. Barely a breeze in my book, "Yes, but it's built to flex in the wind. If you fix your eyes on something stationary you can really get a feel for how much it sways. Nothing to worry about." "Take me back down now!".

I couldn't help but think "Ok, she's a Captain in the USAF and she's afraid of heights

". Probly a good thing I didn't tell her about my adventure to the top of the mast where the sheave for the counterweight cable resided. I could grease it from the top landing, but when it failed, only way up was to climb that 60' of tower, she would have blew chunk allover the lift

.