Motorboat gets notebook seen at NASA perhaps (6-3)

I believe the answer is:

launch-pad

I'm a little stuck... Click here to teach me more about this clue!

'at nasa perhaps' is the definition.
I can't tell whether this definition defines the answer.

'motorboat gets notebook' is the wordplay.
'motorboat' becomes 'launch' (launch is a kind of motorboat).
'gets' is a charade indicator (letters next to each other).
'notebook' becomes 'pad' (a notepad).
'launch'+'pad'='LAUNCH-PAD'

'seen' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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