I am trying to [discover] the build history of my 1970 Boston Whaler boat. The stencil number is 3A1989. Prior to restoration this boat was just a hull.
From contact with Boston Whaler I got for a model the answer "NPCS-SP."
[REVISED QUESTION FROM ASKING IF ANY READERS KNOW SOME INFORMATION TO JUST ASKING ALL READERS FOR THAT INFORMATION. PLEASE DO NOT POSE QUESTIONS IN THE FORM "Does anybody know..."]
Q1: what does "NPCS-SP" mean?
Locating the Build History of a Particular Boat
Re: Locating the Build History of a Particular Boat
See the REFERENCE SECTION article on the 16-17-foot hull at
https://continuouswave.com/whaler/reference/16-17/
See the listing of STENCIL NUMBERS in that article.
Note that the stencil number you mention, 3A1989, indicates the hull was molded in 1970.
This confirms your prior information of the hull being from 1970.
This also indicates the boat you are asking about is a 16-footer, an important element of discovery of the build history you are seeking.
Unfortunately, the stencil number does not encode any information about how the hull was to be finished in a particular model.
In 1970 there were only a few possibilities for models of 16-foot hulls. Again referring to the REFERENCE SECTION article on 16-17 foot hulls, see the listing of the production epoch for the various models being offered under the heading "Models Offered" and subheading "RECREATIONAL".
The only models offered in the year 1970 were:
Compare the full model names above with the letters given to you in the string "NPCS-SP".
Now you must make some logical inference from the letters in the string given by Boston Whaler to the list of models in production in 1970 in order to deduce WHAT MODEL that the hull might have been when it was originally delivered to the dealer who would later sell it, IF indeed there is such information in that string of letters.
Let readers know what deduction you will make about the model from the string NPCS-SP.
Another very good source of information about what the string NPCS-SP means would be to ask the person at Boston Whaler you gave you that string to explain it further.
https://continuouswave.com/whaler/reference/16-17/
See the listing of STENCIL NUMBERS in that article.
Note that the stencil number you mention, 3A1989, indicates the hull was molded in 1970.
This confirms your prior information of the hull being from 1970.
This also indicates the boat you are asking about is a 16-footer, an important element of discovery of the build history you are seeking.
Unfortunately, the stencil number does not encode any information about how the hull was to be finished in a particular model.
In 1970 there were only a few possibilities for models of 16-foot hulls. Again referring to the REFERENCE SECTION article on 16-17 foot hulls, see the listing of the production epoch for the various models being offered under the heading "Models Offered" and subheading "RECREATIONAL".
The only models offered in the year 1970 were:
- a bare hull
- Currituck c.1961 - 1975
- Nauset c.1961 - c.1973
- Eastport c.1961 - c.1973
- Sakonnet c.1963 - 1976
- Menemsha c.1965 - 1972
- Minot 1969 - 1972
- Katama 1969 - 1976
Compare the full model names above with the letters given to you in the string "NPCS-SP".
Now you must make some logical inference from the letters in the string given by Boston Whaler to the list of models in production in 1970 in order to deduce WHAT MODEL that the hull might have been when it was originally delivered to the dealer who would later sell it, IF indeed there is such information in that string of letters.
Let readers know what deduction you will make about the model from the string NPCS-SP.
Another very good source of information about what the string NPCS-SP means would be to ask the person at Boston Whaler you gave you that string to explain it further.