Today was the day I finally reached the end of Lyme Bay and round Portland Bill. I have been staring at this little dot of land for nearly a week and am relieved to be at the end of it. From now on, land will always be in sight.
On the motor out to the start point, we were surrounded by calm-looking seas.
After I dived in, though, it quickly became clear that what looked like an easy day from the side of the boat wasn't the same as the reality in the water.
While there was a strong knot and a half of current pushing me forwards, the problem lay more in the force-4 wind blowing in the opposite direction.
This easterly wind was making the sea choppy, meaning I got saltwater in my mouth every time I took a breath.
To compensate, I had to lift myself further out of the water each time which pulled on my lower back, where I had surgery three years ago.
It was like swimming up hill.
After an hour of hard graft, I fully rounded Portland Bill and entered the stretch of water called The Shambles. Let's hope there's nothing in that name!
After exactly two hours of swimming, I climbed up the ladder and onto Aquila, having covered 11.26km.
Almost immediately I started to vomit down the side of the boat - I had swallowed so much sea water as a consequence of the cross wind.
On the motor back to port, the crew and I were taking it easy, half dosing in the Sunday afternoon sun. But a couple of miles off-shore, one of the propellers suddenly cut out.
An ever-heroic Kelvin (our photographer) dived in with a knife to see what the problem was.
A discarded fishing net had got caught around it, causing the propeller to stop turning.
We are seeing increasing amounts of plastic and fishing nets in the Channel the further along we go.
This doesn't surprise me, as the coastline is becoming more densely populated as we get closer to Dover.
What is keeping me going after such a tough day is the knowledge that we are very nearly at the half way mark. This is reassuring - breaking this swim up into little chunks is getting me ever closer to those white cliffs.
6.99 miles (11.26km)