Increase anchor chain length

[Tinschn 48]

In my opinion, the length of the anchor chain is way too short.

We try to build some nice little landing stage, but it seems nearly impossible to anchor the ships nearby because the anchor chain is so short on sloops and schooners ...

(Screenshot: Here it was not possible anchoring the sloop - that's really not deep at all, you can almost walk there and the sloop will stuck if you drive closer to the shore)

[Rofelo 19]

I think part of the problem is also that the shoreline should not fall off as quickly as it does.