The BCN tugs as built today are true to myth rather than reality!
Virtually none had boatmans cabins, many had low cabins for access
through low side bridges, Dudley tunnel etc. In essence most were
utilarity items, built strong and rudimentary or converted from
previous craft.
The Wyrley and Essington, 473ft level traffic was dominated by coal.
Oversize "Hampton" boats were built to increase the tonnage hauled.
Typically a tug, around 45-50ft, ie "Enterprise" from the Thomas
fleet or "Judith Anne" from Keays would haul between 4-6 boats in a
train. The fore ends of these boats would be heavily ballasted which
together with a powerful engine and large propeller would provide the
momentum at the counter to steer tha hauled boat. Bear in mind
a "Hampton" could have 40tons on board, the ballasted fore end kept
the tug "aimed". Elements used some ex GU motors and actually loaded
the motor, their trains were usually two to three boats. Its amazing
to think that back in the early 1950's the W&E was the canal reported
as carrying the highest tonnage in the country, working of course 24
hours a day!
The last I saw of "Joan 2" was when it was docked at Keays in the
late 70's after that it was moored in Birmingham at Fazeley st.