1)
Did they offer Korbanos on the boat?
1.
Radak citing Targum Yonasan: No ? they said that they will offer in front of Hashem.
2.
Refer to 2:9:2:5.
2)
What vows did they make?
1.
Rashi: They will convert.
2.
Radak: These are vows other than Korbanos, e.g. to give Tzedakah to the poor.
