You cannot find it, except by this wine and this ship - אי אתה מוצא אלא ביין זה וספינה זו
Summary:
By ספינה זו ויין זה the money remains by the מוחזק. By ספינה סתם ויין זה, the ריב"ם maintains that he only pays for the first half of the trip, even though that if he paid already he receives nothing back. By ספינה סתם ויין סתם the ריב"ם is unsure whether he pays a fourth or a half.
That he unloaded his cargo into it - דפרקיה לטועניה בגויה
Summary:
פרקיה לטועניה בגויה means: a) according to רש"י that the שוכר added more cargo, b) according to the ר"ח that the שוכר sold the cargo, c) according to the ריב"ם that the שוכר quit and it is שכיח לאגורי, and the cargo is removed and loaded gently.
Summary:
If it is possible to acquire food with difficulty during the day the חמר would not be permitted to bring food for the entire day. If food is readily available then neither would be allowed to bring any food at all.
Now that you said a nursing woman may ride, is it necessary to discuss a pregnant woman - השתא מניקה אמרת דרכבה מעוברת מבעיא
Summary:
According to תוספות a מעוברת weighs more than a מניקה ובנה, and the ש"מ is from mentioning both מניקה ומעוברת. According to our גירסא, the ש"מ is from mentioning both גסה and מעוברת.