Re: Sailing 3 miles off shore and Thunderstorm moves in from the east. What do you do
First, you don't want to be trying to go into a port under the conditions you describe. The land is your enemy. It is hard and unforgiving.
Depending on the number of reefs you have available in the main, take the most you can or drop it if you don't have deep reefs. Assuming that you have a roller furling jib, roll it up to about 70-80%. Batten down the hatches, put on you foul weather gear and you running lights and sit back and enjoy it. A thunderstorm won't kick up much sea, so you'll have wind and rain but it will be fresh water. And once again, stay away from land!
As to the cow, I defer to the judgement of my other colleagues on the board, having lived my life in big cities and thus having no agricultural experience what-so-ever.