Was she Crown's or Thompsons?

Silver Line, London.
Built 1957 as Yard No 242.
7,843 Gross. 11,898 Dwt. 13.5 kts.
Subsequent History:

63 RIO SANTA - 70 PETUNIA

Disposal Data:

BU Kaohsiung 15.1.80 [Kao Yung Steel Enterprise Co]

Crowns taken over by Thompsons in 1946 but Crowns contracts continued with their own yard numbers but the yard, by then belonged to Thompsons. That is why several Crowns ships are attributed to Thompsons a s the builders.