EPISODE #12: The Debrief – Trans-Tasman Seawind 1170 Delivery
March 26, 2026
Delivering a catamaran across the Tasman Sea — one of the world’s most notoriously unpredictable bodies of water — is no small feat. In a recent episode of the Two Hulls One Life podcast, Multihull Central’s skipper and yacht broker Tom Adams sat down for a detailed debrief along with Brent Vaughan who also joined the 8.5-day passage aboard the Seawind 1170 from Sydney to the Auckland New Zealand, covering 1,248 nautical miles of mixed and at times challenging conditions.
Preparation: Safety First
Tom’s approach to boat prep was methodical. With the Seawind 1170 — known as Sweet Disposition — being just 18 months old and already having logged coastal miles to Townsville, the foundation was solid. Tom spent several days conducting a thorough systems check: verifying the life raft, fire extinguishers, EPIRBs, dan buoys, drogue, and all first aid gear. A full rig inspection was carried out, revealing only a minor goosesneck pin replacement. Jacklines and harnesses were rigged, and all shackles inspected. Spare 100-litre jerry cans of fuel was also taken aboard — a habit Tom credits with saving him in rough conditions off Coffs Harbour on a previous voyage.
Weather Routing: Timing is Everything
Weather planning was central to the trip. Using PredictWind Professional paired with an Iridium GO satellite device, Tom monitored evolving systems throughout the passage. The crew departed within a reasonable window, though competing pressure systems — a tropical low near New Caledonia and a Southern Ocean front — required careful navigation decisions. At one point, the crew deliberately slowed the boat to allow a developing low to clarify before committing to a heading. The southerly front ultimately produced beam swells of up to 4–4.5 metres and winds peaking around 30–32 knots, but was short-lived. The first leg out of Sydney saw wind on the nose and uncomfortable short chop, while a mid-passage calm required motoring for a period. The final 48 hours into New Zealand delivered some of the best sailing, with the boat hitting 13–14 knots.
Offshore Performance: The 1170 Proves Itself
For Tom — a lifelong monohull sailor making his first offshore catamaran passage — the Seawind 1170 was a revelation. The boat’s raked bows and chined transom provided excellent buoyancy and kept the vessel dry in heavy chop. The enclosed saloon cockpit was a standout feature: crew could reef the main from inside the helm station without getting wet, even in 30-knot conditions. The autopilot performed flawlessly throughout. The boat spent approximately two full days under third reef, prompting a suggestion that an additional, smaller reef point would suit offshore work well. The screacher sail, deployed briefly during calmer stretches, proved extremely easy to handle solo.
Systems, Power & Provisioning
The boat’s lithium battery system with booster alternators was a highlight — capable of charging from 60% to full in under 30 minutes at idle engine speeds. This proved invaluable given the predominantly overcast conditions that limited solar input. The crew ran the engines for roughly 30 minutes each afternoon to top up batteries and heat water via the engine’s heat exchanger. Total fuel consumption across the passage was around 135 liters per side — well within the boat’s generous 520-litre capacity, plus reserve. A Rainman AC watermaker producing 140 liters per hour handled all fresh water needs from day five onward, with the 520-litre tank capacity proving more than adequate. Crew comfort was maintained through pre-cooked meals, a practical galley-down layout, and rotating 3-hour watch shifts.
Standout Safety Feature
Seawind’s twin helm located on the same level as the saloon and cockpit surfaced as a major safety benefit when operating the boat offshore, especially when putting in reefs or shaking reefs out. Despite the twin helm arrangement, the protection of the coach roof, toughened glass windows and side clears, the helmsmen was never exposed to the elements and could add a reef using the single line reefing system without stepping outside of the cockpit or going forward. “Those helms are totally underrated on that boat and they are a major safety benefit,” Brent Said.
Verdict
Tom and Brent’s conclusion was unequivocal: the Seawind 1170 is a genuine offshore boat. At just under 40 feet, it punched well above its weight — combining the livability of a cruising catamaran with real bluewater capability. “That boat ate up those conditions offshore,” Brent said. “She felt strong, she felt safe — no concerns whatsoever,” Tom sail. For anyone considering a trans-Tasman passage or extended offshore cruising, this episode is a masterclass in preparation, weather strategy, and choosing the right boat for the job.
General Statistics
Rumb Line Total: 1,140 nautical miles
Total Miles Covered: 1,248 nautical miles
Total Days At Sea: 8.5
Average Speed: 6.3 knots
Top Speed: 16.6 knots
Deisel Consumed: 270 liters (approx. Half tank)
Seawind 1170 Offer
There is a factory special available from Seawind Europe with Med delivery offering a USD$50,000 discount on one boat only.
To get more information including the specifications and options included VISIT HERE.
Or contact the team on 1300 852 620 or sales@multihullcentral.com