SYDNEY (S&P Global Ratings) Feb. 11, 2019--S&P Global Ratings today said it has assigned its 'BB+' issue credit rating to National Australia Bank Ltd.'s (NAB; AA-/Negative/A-1+) proposed hybrid instruments, NAB Capital Notes 3 (NAB CN3). We rate NAB CN3 four notches below NAB's stand-alone credit profile (SACP) of 'a-'. The starting point of the SACP reflects our view that it is unlikely that the Australian government's support for NAB and other Australian banks--if needed--would extend to the hybrid capital instruments issued by the banks. To arrive at the rating on the NAB CN3 notes, we deduct four notches off NAB's SACP (a-), reflecting the following factors: We deduct one notch for the subordinated status of NAB CN3; Two notches for