Wizard said:
Foot deep......
slowly
Three feet deep....... on a ferry
If it's deeper than this, don't do it unless you've fitted a snorkel.
hummmm, the proof of the pudding is in the eating and all that, but I'd have to say from experience that that is too deep...
That looks like a similar speed to the crossing I made of Shilton Ford and I'm still waiting to get mind back.
I know there are a few here that are going to disagree, but IMO there are a couple of problems with the design of this bike.
If you have a look at Wizzards picture, the BMW horizontal (WTF???) snorkel is on the right side of the bike, tucked in behind the plastic tank. The air intake is very near the bottom front suspension yoke. In a 4x4 I was always taught to create a bow wave and push it through, dropping the power only as you start to exit the water, therefor not pushing water up the dry road.
If you look at the pic, you'll see that this bow wave has worked to create a lower level of water around the back of the tank, in theory giving you a better ability to wade. The trouble is if you look at the front of the bike, you've got water over the front mud guard and also over the lower yoke, the way the whole thing is designed it is likely that this will lift water and funnel it to the air intake.
The other dumb thing about the design is that if you open the airbox up and look inside, you'll see that there is a hole on the bottom left side of the airbox, this is the engine breather, any water that you do get into your airbox, but not into the cylinders has no where to go but down, through the breather pipe and into the sump - emulsifying the water which can not be a good thing in the long run.
In hindsight it is possible that the design of the ford might have come into play for me as I managed to get over three quarters of the way across before the engine cut out and I was actually climbing the slope out of the ford at this point… the BMW snorkel is angled slightly downwards, so I’m
guessing as I was climbing out the snorkel leveled and made it easier for water to enter, but I have no way of knowing for sure.
On the subject of fitting snorkels, I've had a bit of a hunt about for one but can't find anything specific, TT used to do one apparently but they dont now. I spoke to a guy on the TT stand at the bike show and he suggested a very simple mod that works well for him - he's cut a plastic coke bottle in half and put the bottom half over the end of the BMW snorkel, this acts to stop water being driven into the airbox.
Another mod that has been suggested to me is to increase the height of the breather pipe by inserting an additional pipe inside the airbox.
As I say I know there are a few of you that will disagree with me, but get this wrong and it becomes a very expensive exercise and all BMW's claims that this is a bike built to handle anything Mother Nature can throw at is disappear out of the window.
Sorry to sound such a causionary note, but I've learnt a lot of this at my own cost, which is a real shame because like my Land Cruiser I fully believed the GSA was going to be a do anything go anywhere kind of vehicle....
But I love to watch! 
Liv.
