Metaphorical Self-Location: Attributive Realised As Mental Process

I	eventually	found	myself [aboard a crowded boat [to Australia] ]
Senser		Process: mental	Phenomenon

Compare the more congruent:

I	was	aboard a crowded boat [to Australia]
Carrier	Process: attributive	Attribute/Location

Note that treating the prepositional phrase as circumstance instead of Qualifier reconstrues the clause as reporting a spiritual awakening:

aboard a crowded boat [to Australia]	I	eventually	found	myself
Location	Senser		Process: mental	Phenomenon