Tom Baker in a muddle going on board (11)

I believe the answer is:

embarkation

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'going on board' is the definition.
'embarkation' can be an answer for 'going' (embarkation is a kind of going). I'm not sure about the 'on board' bit.

'tom baker in a muddle' is the wordplay.
'muddle' is an anagram indicator.
'tom'+'baker'+'in'+'a'='tombakerina'
'tombakerina' is an anagram of 'EMBARKATION'.

Can you help me to learn more?

(Another definition for embarkation that I've seen is " Going on board (a ship)".)

I've seen this clue in The Globe and Mail.

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