The Coastal Liner
Many different types of vessels navigated the Inside Passage, but the dominant type on longer routes was the "coastal liner". A coastal liner was a vessel which if necessary could withstand severe ocean conditions, but in general was expected to operate in relatively protected coastal waters. For example, as a coastal liner, Sophia would only be licensed to carry passengers within 50 miles of the coastline. Coastal liners carried both passengers and freight, and were often the only link that isolated coastal communities had with the outside world. Originally coastal liners were built of wood, and continued to be so built until well after the time when ocean liners had moved to iron and then steel construction. After several shipwrecks in the Inside Passage and other areas of the Pacific Northwest showed the weakness of wooden hulls, CPR switched over to steel construction for all new vessels.
SS Princess Sophia was also called a "pocket liner" because she offered amenities like a great ocean liner, but on a smaller scale. The ship was part of the CPR "Princess fleet," which was composed of ships having names which began with the title "Princess".
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