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I'm just quickly scanning some of these messages, so I apologize if this has been brought up already...

The type of navigation you're seeing in Worsley's logbook is 100% standard for 
this period of time. You may want to look at Dave W.'s run-through of a page 
from a "Navigational Notebook" from the Charles W. Morgan from 1896 located 
here: http://www.fer3.com/arc/m2.aspx?i=027590. As you can see the haversine 
method of working time sights was used there, too, day-after-day for months 
on end. In fact, it seems to have been quite the norm in this period. Also 
determining bearings and dlon dlat etc by calculation or table look-up rather 
than plotting (as we might do it today) was standard.

There's a misconception, sometimes repeated on NavList, that navigators were 
all using celestial lines of position at least by 1900 (some even think that 
this occurred shortly after Sumner's initial publication over fifty years 
earlier), and it just isn't true. While some navies encouraged (even 
required?) their navigators to use the "New Navigation" it was not popular 
otherwise. Again and again, you will find authors bemoaning the low profile 
of the New Navigation in some circles. As late as the Second World War, most 
navigators on merchant ships still got their positions via morning/afternoon 
time sights for longitude, Noon Sun for latitude, and DR to keep everything 
up-to-date in between. Celetial LOPs were the exception. Of course, in 
history, there are always exceptions and exceptions *to* the exceptions, but 
"normal" navigation did not fully convert to the modern approach until the 
post-war period.

Even in the late 1970s, just after I had learned "modern" celestial navigation 
via HO229 and plotting LOPs, I remember talking with an old navigator about 
celestial navigation, and I recall being a little disturbed that I couldn't 
figure out what the heck he was talking about. Why did he want to shoot the 
Sun when it was near the prime vertical (irrelevant to celestial LOPs but 
important for time sights). After some time, I realized that he had learned 
his navigation aboard merchant vessels in the 1940s and he still navigated in 
the 1970s by the methods he had learned 35 years earlier: time sights and 
Noon Sun.

-FER



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