Pull this animal and acquire the utensils that are on it, etc. - משוך בהמה זו וקני כלים שעליה כולי
If the מקנה said משוך קופה וקני כלים he is קונה. If the מקנה did not say משוך בהמה וקני כלים שעליה, he is not קונה even if he made a משיכה. If the משיכה on the בהמה was made indirectly, it is not קונה.
The ship is indeed resting; it is the water that moves it - ספינה מינח נייחא ומיא הוא דקא ממטו לה
Objects that move not of their own accord, are considered moving and not at rest; however concerning קנין חצר, an object which moves not of its own accord (as an animal), but rather by something else (like a ship), is not considered moving because it is similar to יד which is moved by the body.