Another survivor, Alan Fowler, who lost his mother Edith Fowler in the accident when he was 12 years old, made the journey from Blackburn to attend the memorial service.
"Penmaenpool isn't the easiest place for me to get to but I was one of the passengers of the Prince of Wales boat that sank on 22 July, 1966," said Fowler.
He recounted that his mother was among the victims who lost their lives in the estuary that day.
"I was 12 years old at the time and my mother was one of the victims that died that day," said Fowler.
Fowler noticed the event announcement in a local newspaper and decided to travel back to Gwynedd.
"I saw a small piece in your newspaper saying that there was to be a memorial service on the toll bridge on 22 July at 3pm," said Fowler.
He noted that he had only revisited the site twice since the tragedy occurred.
"I have only been back to Penmaenpool bridge twice since 1966, once for the 40th anniversary and once for 50th anniversary, along with my brother who was only 10 years old at the time of the accident," said Fowler.
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He reflected on the cultural silence surrounding trauma during the era following the accident.
"I was born in an era when no one talked about accidents. I remember my dad not saying anything about it.
There was no such thing as counselling.
