Hi Rick

I have found him in the 1881 Census living with family in Lancashire - Proffesion is now ... Master Rigger, It would seem that, as you suggest he started as a Rigger, was promoted to Coxswain and then in retirement he reverted back to his normal trade.

Interesting chap.

Source:
Household:

Name Relation Marital Status Gender Age Birthplace Occupation Disability
William ANDREWS Head M Male 61 Dartmouth, Devon, England Master Rigger
Charlotte ANDREWS Wife M Female 47 Truro, Cornwall, England
Caroline ANDREWS Daur U Female 19 Pembroke Dock, Wales
Louisa ANDREWS Daur U Female 15 Liverpool
William H. ANDREWS Son Male 5 Liverpool
Frederick ANDREWS Son Male 3 Liverpool
Mary LEIGH Lodger U Female 59 Liverpool
William TROUGHTON Lodger W Male 65 Liverpool Retired Merchant

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Source Information:
Dwelling 14 Whitaker St
Census Place Toxteth Park, Lancashire, England
Family History Library Film 1341872
Public Records Office Reference RG11
Piece / Folio 3640 / 109
Page Number 12