I have also come across another verse for Health to the Company, that makes sense in relation to the reference in the third verse to the ship at anchor (and eventual departure):

My footsteps may falter my wit it may fail
My course may be challenged by November gale
Ere fortune shall prove to be friend or be foe
You will always be with me wherever I go

Not sure of origin for these - whether a recent addition or another trad strain. Would love to know though!