b., for built.
bge., barge.
c., composite.
Can., Canadian.
col., collision.
com., commission.
cfy., car ferry.
g.t., gross tons.
Hur., Huron.
l., lake.
Mich., Michigan.
n.t., net tonnage; or sometimes, when applied to Canadian vessels, new tonnage.
prop., propellor.
r., river.
rev. cut., revenue cutter.
straits, Straits of Mackinac.
Sup., Superior.
stmr., steamer.
sty., steamyacht.
stcb., steam canal boat.
stpd., steam pile driver.
stl., steam lighter.
std., steam dredge.
schr., sail vessels or barges.
slp., sail sloop.
sly., sloop yacht.
U.S. Gov., United States Government.
v., vessel.
’98, 1898 etc..