Hjalmar (John) Martin Thoresen's departure

My grandfather, Hjalmar, left Kristiania, at 20 years of age, electrician by profession, on the SS Montebello, April 25, 1902 and his destination was Boston, USA. I have not been able to find what ship he took after landing in Hull to sail to Boston, MA USA. Can anyone help me with this information. Thank you so much. Jewel D. Lawrence