Explain in brief the character of gulliver as a surgeon.

From the text:

"......at last he plainly invited me, though with some apologies, to be surgeon of the ship; "that I should have another surgeon under me, beside our two mates; that my salary should be double to the usual pay; and that having experienced my knowledge in sea-affairs to be at least equal to his, he would enter into any engagement to follow my advice, as much as if I had shared in the command."

Gulliver is set to be the head surgeon with another under him; the captain trusted him and actually offered him twice his regular pay; the captain believed him as knowledgeable about sea-affairs as he was himself.