Navigating New Zealand’s stunning coastal waters is an exhilarating experience, but bar crossings remain one of the most challenging aspects for even the most seasoned mariners. Our mission is to equip boaties with the essential knowledge and skills they need before they cross a bar. We are tapping into the expertise of local legends, experienced Coastguard volunteers, and supportive community groups around Aotearoa to try and prevent further tragedies occurring on bars.
What is a bar?
As a river flows to the sea or an estuary/harbour meets the ocean silt, sand and gravel is collected within the flowing water. As the river/harbour meets the open ocean the current begins to slow and the silt, sand and gravel falls and settles on the seabed. Over time the silt, sand and gravel builds up forming an offshore bar.
Why are they dangerous?
As the open water becomes shallow, waves can become steep and dramatically increase in height. Add to this an outgoing tide, and you’ve got waves breaking in an unpredictable and treacherous pattern.
Trying to cross this in any boat can be extremely dangerous – in fact, some of NZ’s worst maritime disasters have occurred when vessels have been swamped going or coming back over a bar. Even container ships aren't immune from the power of the waves over bars.
| Before attempting a crossing, it’s essential to thoroughly understand the bar's current state. Start by observing the water surface for patterns and changes in wave behaviour, which can indicate submerged hazards or shifting sandbanks.
Vital Signs to Watch Out For
Keep an eye on the following signs:
-
Breaking Waves: Indicate shallow waters or obstacles.
-
Foam Lines: Show current direction and strength.
-
Water Colour Changes: May suggest depth variations or shoals.
Interpreting Conditions
Good preparation includes checking tide times and weather forecasts. The optimal time to cross is during high tide and in calm weather, as this minimises wave height and exposes fewer obstacles. Always study the sea conditions and remember that calm conditions can change rapidly. Remember to avoid crossing when the tide is going out.
Preparing Your Boat and Crew
Ensure your boat is in top condition—check that the engine and steering are functioning well, secure all loose items - the last thing you want is an anchor bouncing around, and distribute weight evenly. Every person on board must wear a well-fitted life jacket and crotch strap. If you have PLB’s then make sure you are wearing these too. Prepare for a crossing by assessing the channel's shape and continually monitoring the ever-changing conditions.
|
|
Communicating with Coastguard
Before, and after crossing a bar, it’s crucial to communicate with the Coastguard via VHF radio. Inform them of your intention to cross and your estimated time of crossing, so they can monitor your journey and provide assistance if needed. This step is vital for your safety and ensures someone is aware of your location and actions.
A few extra things to take note of
-
Don't rush, be safe: going out over the bar should be done slowly and cautiously. Pick up the rhythm of the waves, and look for a good opening.
-
Once you spot a good opening, commit! This is important – once you’ve committed to crossing, you have little choice but to continue. It can be dangerous to try to turn back, as you might get swamped.
-
Keep the bow of your boat pointing directly into the waves, with the bow trimmed up. Throttle back as you crest the wave (so you don’t get too much air on the other side), then get ready for the next set.
-
Assign a crew member to watch your rear, in case a wave starts to catch up. If a wave rears up unexpectedly behind you, don’t panic – pick up the pace a little to keep ahead of it.
-
As soon as you’re over the bar, don't forget to close your Bar Crossing Report with Coastguard - here's a reminder of how.
Coastguard’s Role in Safe Crossings
This spring and early summer Coastguard is on the road around Aotearoa running a series of seminars designed to equip boaties with the skills, knowledge and confidence to make good decisions about whether to cross a bar. The seminars are extremely popular, with some events selling out and nearly 1,000 attendees so far! The seminars cover critical topics, including understanding bar-specific hazards, assessing the impact of weather and tides, and most importantly, implementing emergency procedures if trouble occurs. If you can't make it in person, there is even an online option.
In conclusion, no bar is ever a safe bar to cross but by being prepared and knowing the risks you can make an informed decision before you cross. or more importantly make the call not to cross.
Check out the where the bar seminars are being hosted at HERE
|
