Gyropilot
automatic pilot
boatheader
boatsteerer
cicerone
conner
courier
cowherd
cox
coxswain
docking pilot
dragoman
drover
goatherd
guide
guidepost
guider
herd
herdsman
mercury
navigator
pilot
pointer
river pilot
sailing master
shepherd
steerer
steersman
tour director
tour guide
wheelman
Jack tar
gob
jack
mariner
old salt
sea dog
seafarer
seaman
tar
copilot
crewman
gunner
helm
naturalist
skipper
supercargo
swordsman