S1 • E1
Captain Star hires a new tug called Sunshine, later the seventh member of the fleet, to help with the overwhelming duty of towing in the magnificent ocean liner 'The Duchess'
S1 • E2
When barges start mysteriously disappearing around Bigg City Port, Ten Cents is blamed for stealing them. Grampus is determined to clear his friend's name and discovers a kidnapping plot and a mysterious pirate-like tug named Sea Rogue
S1 • E3
Whilst working up the canal, Zero switcher Zug accidentally traps himself with the Star Tugs by wedging an old tramp steamer across the locks. Now a useful pyromaniac alligator tug is their only hope...
S1 • E4
The navy takes Grampus out of service and decides to use him as target practice. Can his Star Tug friends save him in time? Meanwhile, Lillie Lightship is damaged on the day of the regatta.
S1 • E5
During the annual manoeuvres both Bigg City tug fleets service the Navy. But it's a dangerous job handling ammunition and potentially explosive barges. All is going smoothly until Bluenose, a bossy naval boat demands that O.J., the oldest of the Star tugs, gives him immediate priority with a barge-load of gasoline. The consequences put all the tugs in great danger.
S1 • E6
Warrior is fed up of his reputation as being 'clumsy', so he decides to go throughout the rest of the day without causing any accidents whatsoever. However, this doesn't go as planned - and he causes a lot more accidents than usual!
S1 • E7
The Stars and the Z-stacks are both competing for a big steel contract. The fleet which can transport the most steel in one day, wins the contract. The canal is a short cut through Bigg City, but Big Mac of the Stars decides to go round the bay and let Zeb and Zac of the Z-stacks go through the canal. At first Warrior of the Stars is confused by Big Mac's idea for both of them to go round the bay, but the short cut through the canal wasn't necessarily the best route.
S1 • E8
Due to increasingly warm weather in Bigg City, many foreign tramp steamers are put under quarantine, under the risk of them being diseased. Despite his engine troubles and fears of being scrapped, old O.J manages to sort things out when an old tramper causes confusion.
S1 • E9
Big Mac returns to the Star Dock one winter night claiming to have seen a fleet of ghostly white tugs drifting through the mist. At first, the Star Tugs refuse to believe Big Mac's claims, until an eventful night in the fog leaves them wondering if they are truly bordering on madness.
S1 • E10
Ten Cents and Sunshine discover an abandoned tug named Boomer floating astray in the estuary. He claims to be jinxed, and whilst Sunshine believes him, Ten Cents scoffs at this superstition. However after several unnatural incidents, Ten Cents starts to come round to Sunshine's way of thinking
S1 • E11
An old dirty tramper, the notorious Johnny Cuba, suspected of smuggling lurks outside the limits of Bigg City bay. He forces Zebedee, one of the Z-stacks, to tow him into the safety of the harbour. Normally, Zebedee would have been glad to help out an old friend but this time - things are different.
S1 • E12
Towing huge piles of logs was always a very dangerous operation. When the snows begin to melt and the river swells up there's added danger because the sudden rush of water could cause log jams that need to be carefully entangled. One day a particularly nasty log jam occurs and Big Mac needs Sunshine to help him clear it, but the little tug gets trapped.
S1 • E13
Every winter the big liner Vienna would come to Bigg City Port to pick up supplies and re-fuel. This year however, the harbour was frozen over, so the tugs have to take supplies out as far as Lillie the Lightship, as this was as near as a big ship like Vienna could go to the harbour. Problems begin when Lillie the Lightship runs out of fuel and things just start getting worse when the Z-stacks show up.
Narrator
Ten Cents
Sunshine
Big Mac
Coast Guard
Top Hat
O.J.
Warrior
Grampus
Zorran