Narrow boats in a lock

Narrow boats on canal

Closing lock gates

Stretch of the canal

Swan resenting other canal users

Virginia inside the narrow boat

Looking from front of narrow boat

Interior of narrow boat

Power control

Approaching lock

Entering lock

Nearly inside lock

Lock full

Lock two thirds full

Lock one third full

Lock empty

Leaving lock

Inside another lock

The tiller - like a swan

The narrow boat glides on