Sentence:  He at once resolved to accompany me to that island, ship aboard the same vessel, get into the same watch, the same boat, the same mess with me, in short to share my every <WSD>hap</WSD>; with both my hands in his, boldly dip into the Potluck of both worlds. 
Meaning of the word marked with <WSD> tags:  That which happens; an occurrence or happening, especially an unexpected, random, chance, or fortuitous event; chance; fortune; luck.