Diving Tips and Tricks

Great question — and a very relevant one for NSW divers, especially around the Central Coast where conditions can swing from pleasant to properly chilly depending on season and depth. It's raining, no divers coming into the store and I have caught up with my paperwork- "a very rare situation" so I'm sitting here and pondering the new semi dry wetsuits soon to be released, I asked myself several different questions about "semi drys" and here are the results. What Is a Semi-Dry Wetsuit? Basically, a semi-dry wetsuit looks similar to a traditional 7mm wetsuit but includes: Waterproof-style zippers (often across the chest or back) Smooth-skin wrist and ankle seals Sometimes internal dams or bibs to reduce water flushing It doesn’t keep you completely dry like a drysuit, but it dramatically reduces water movement inside the suit. Is a Semi-Dry a Good Decision? For many Australian temperate-water divers — yes, absolutely. It’s particularly good if you: Dive autumn through spring Feel the cold more than others Do longer dives (45–60+ mins) Dive multiple times in one day Spend time on the surface between dives Around the NSW Central Coast, where winter water can drop to 16–18°C, sometimes lower, a semi-dry is often a smart upgrade over a standard 7mm. Benefits of a Semi-Dry Wetsuit 1. Significantly Warmer Than a Standard 7mm A semi-dry can feel 20–40% warmer than a normal 7mm wetsuit. Why? Less water flushing Better seals Higher-quality neoprene More consistent insulation throughout the dive Instead of cold water constantly replacing warm water inside the suit, it traps and stabilises warmth. 2. Much More Comfortable on Repetitive Dives If you’re doing: Boat double dives Trident Club days Courses Or instructing divers You won’t get that second-dive chill nearly as badly. 3. Less Wind Chill on the Surface This is a big one. After your dive at Terrigal Haven or on a boat heading back in — wind across a wet wetsuit can drop your body temperature quickly. Semi-dry seals reduce that evaporative cooling effect. 4. Still Flexible and Simple Unlike a drysuit: No valves No extra training required No major buoyancy change Less maintenance complexity It’s a very practical middle ground. Other Considerations 1. They Are Harder to Get On Those wrist and ankle seals mean: More effort putting it on More effort taking it off Lubricant or technique sometimes helps But most divers adapt quickly. 2. They Are More Expensive You’ll typically pay: $600–$950 AUD for a quality semi-dryvs $350–$600 for a good 7mm wetsuit But if you dive regularly, the comfort gain is worth it. 3. Buoyancy Considerations Because they’re often high-quality 7mm neoprene: You may need slightly more weight than a compressed neoprene wetsuit Not dramatically different — just fine-tune during your first dive Durability – Will They Last? Yes — if you buy quality. Semi-dry suits are generally: Built with reinforced knees Stronger stitching More robust zippers The zipper is the most important component. If you: Rinse thoroughly Lubricate zipper periodically Store correctly Don’t force the zip They can last many years. Poor zipper care is the most common failure point. How Much Warmer Than a Normal Thick Wetsuit? Realistically: A semi-dry 7mm can feel similar to an 8–9mm traditional wetsuit For many divers, it delays the “I’m getting cold” moment by 15–30 minutes For someone doing 60-minute dives at 17°C: A standard 7mm → cold toward the end A semi-dry → comfortable throughout It won’t match a drysuit — but it’s a serious step up. Who Should Definitely Consider One? Instructors Divemasters Club regulars Divers doing winter shore dives Anyone who hates finishing a dive early because of cold Who Might Not Need One? Casual summer-only divers Tropical travel-only divers People who naturally run very warm Bottom Line for You (NSW Diving Context) If you're doing consistent diving on the Central Coast and want: Longer bottom times More comfort Less post-dive chill A professional, serious setup A semi-dry is a very solid decision. It’s often the “sweet spot” before moving to a drysuit. Now is the ideal time grab your own semi dry! Check out our stock in store and don't forget Trident Club members get special pricing......  

Becoming a scuba instructor is much more than earning a certification. It is joining a global community of professionals dedicated to introducing people to the wonders of the underwater world.

For technical divers, decompression tanks are essential tools that ensure a safe ascent and proper gas management. But handling and rigging deco tanks can feel intimidating — especially for those new to technical setups.

Specialty courses are advanced recreational diving programs designed to teach you new skills, increase your confidence, and open the door to new underwater adventures.

Frequently Asked Questions (faqs) General Questions Where are you located on the NSW Central Coast?We are based Killarney Vale on the beautiful NSW Central Coast, just over an hour north of Sydney. Our dive shop is close to famous sites like The Haven, Terrigal Reef, and the Ex-HMAS Adelaide wreck. Do I need prior experience to go scuba diving with you?No! Our Try Scuba Diving experience is perfect for beginners. No certification is required; simply bring your enthusiasm for adventure. What is the minimum age for scuba diving?You can start with the Try Scuba program at age 10. Junior Open Water Diver certification is also available for kids 12 and up. Children as young as 10 years old are welcome to participate. However, due to required lower student-to-instructor ratios for younger divers, our standard Open Water courses for participants under 15 years of age are offered at an adjusted, higher rate. A dive medical from a dive doctor is required for all children under 15 years before commencing any in water training How long does it take to get certified as an Open Water Diver?Our Open Water Diver Course typically takes three days, with a mix of online, at home theory, pool sessions, and four ocean dives. Is scuba diving for everyone?Scuba diving may not be for every person, but it is available to far more people than many realise. The key lies in honest self assessment, professional medical advice, and quality instruction. Scuba diving isn’t universal—but it is remarkably inclusive. Health & Safety Do I need to know how to swim?Yes. Basic swimming ability (able to swim 200 metres and tread water for 10 minutes) is required for certification courses. For Try Scuba, minimal swimming skills are fine. Is scuba diving safe?Absolutely—when proper guidelines are followed scuba diving is extremely safe when conducted under the guidance of qualified instructors and following established safety procedures. We adhere strictly to industry safety standards. Do I need a medical certificate?A medical questionnaire is required. If you answer "yes" to any health concerns, a dive medical from a doctor may be needed. What happens if the weather is bad?If adverse weather makes diving unsafe, we will either reschedule your dive, offer an alternative dive location, or provide you with a refund or credit, depending on the circumstances less any credits or learning modules. How deep will I dive?Try Scuba Diving: up to 12 metres Open Water certification: up to 18 metres Advanced Adventure divers: up to 30 metres (including the wreck dive) What should I bring for my dive day?Swimwear, towel Sunscreen, hat Certification card (if certified) Warm clothing for after the dive Do you offer photos or videos of the dive?No—You are most welcome to bring your own camera- Great for capturing  memories! How do I book a dive or course?Bookings can be made: Online via our website booking system. By phone — just give us a call. In-person at our dive centre. What payment methods do you accept?We accept: Credit/Debit Cards (Visa, Mastercard) EFTPOS Direct Bank Transfers Cash (in-store only) What is included in the price? Most beginner experiences and courses include: Equipment hire Professional instruction Boat or shore dives Certification (if applicable) What Equipment do you provide on the Open Water Course?All students are provided with the following gear hire for the duration of the course 6.5mm wetsuit one piece with long arms and long legs, Buoyancy vest Regulator with alternate air source Dive computer Scuba cylinders including air fills Weight belt and weights. Courses & CertificationI have a booking, what must I do before the course starts? Upon receipt of your confirmation voucher  please action the following:
 1.       Via the link Dive Medical, please complete and submit the completed dive medical questionnaire. 2.         If you receive an advice that you are required to have a full dive medical, this must be completed at least 7 days prior to course commencement Please register for your E learning.   Download the divessi app and register a profile.  Once you have registered for the open water course theory, the Dive centre receives notification that you have registered and will confirm back to you with access to the online theory.  When the course downloads complete the theory- to be allowed to start the practical course you must have completed all the theory prior to the start date. You will need to allow 6-7 hrs to complete this.    If you have not completed the online theory, you will not be able to start the course. A $100.00 rebooking fee will apply if you need to change your start date. What diving courses do you offer? We offer internationally recognised scuba courses: Open Water Diver         Advanced Open water Diver  Stress and Rescue Diver Over thirty Specialty courses (e.g., Nitrox, Wreck, Dry Suit) Professional Divemaster training Professional Instructor training Extended Range  Horizon Semi closed rebreather Freediving Do scuba diving certifications expire?No, we strongly recommend a skills update if you haven't dived in 12 months.  What certification agencies do you offer? We offer SSI, this is an internationally recognised certification adhering to ISO guidelines.What’s the difference between training level depths? Open water diver is 18m Advanced adventure diver is 30m Deep divers 40m Extended Range 45m Technical Normoxic 60m Can I transfer, upgrade or continue my diving education if my certification is from another agency? Yes, all recognised agencies have equivalencies Can I bring my own gear?Of course. Your gear will be checked by our staff before the dive. Do you service scuba diving gear? Our Life support service technicians are qualified to service scuba equipment in our fully stocked service centre. We only use the manufacturers service kits. Dive Trips & Local Sites What are the best dive sites on the Central Coast?We are fortunate to offer easy access to exceptional dive sites, including: Ex-HMAS Adelaide Wreck – Australia’s premier artificial reef dive. Terrigal Haven Reef – Ideal for beginners and macro photography. Terrigal Haven – Great for training and shore dives. 3 Mile Reef – Known for its vibrant marine life. Swansea Bridge (Night Dives) – Perfect for exciting night diving. ·       We also run trips to South West Rocks, Jervis bay, Forster, and the Solitary Islands. Do you schedule paid guided dive trips?Yes. We conduct regular shore and boat dive trips led by experienced, professional guides who ensure you get the most out of your underwater experience. What are the water temperatures and visibility like?Water temperatures typically range from 17°C Ito 19 degrees n winter up to 21 to 25°C in summer. Visibility varies depending on conditions but usually ranges from 5 metres to 20 metres. Are tanks and weights included in the dive price?Yes. For all guided dives and most courses, tanks and weights are included in the price. What marine life can I expect to see?Expect to see; Blue gropers, giant cuttlefish, wobbegong sharks, and sometimes dolphins or rays, maybe even the elusive Grey Nurse shark!! Can non-divers join the trip?Yes—some trips allow snorkelers or boat passengers. Contact us for availability. Travel & Booking Info Is transport provided to dive sites?Transport to local sites is not included for courses or guided dives. For day trips outside Terrigal, or international travel- airport/ boat transfer arrangements are arranged as part of the package where specified. Is accommodation available?We partner with local hotels and holiday rentals. Ask us about packages! What happens in bad weather?We may reschedule or offer alternative sites or refund. Always remember- Safety is our priority. See our cancellation policy for details. Environmental Responsibility How do Central Coast Divers protect marine life?We follow “Look but Don’t Touch” rules, limit group sizes, and run ocean clean-up dives. Divers are educated on protecting reefs and wildlife. Divers are not allowed to cut up marine life to feed other marine life. Can I join conservation dives or courses?Yes! Ask us about our Blue Oceans or AWARE conservation dives and eco-initiatives. Special Offers & Packages Do you offer special deals or group rates?Yes—seasonal offers, multi-course discounts, and group rates are available. Check our website or contact us for current deals. Is there a loyalty or referral program? Yes—refer a friend and both of you receive dive credits or discounts! Rent scuba gear and get free rental offers Bulk Air and Nitrox refills cards Club member shore dives Club nights Dive club member have many special offers Other Common Questions Can I dive wearing glasses or contact lenses?Yes. Soft contact lenses are fine, and we can also arrange prescription masks. Is scuba diving suitable during pregnancy?No, diving is not recommended while pregnant. What languages do your instructors speak?English primarily; some staff also speak other languages—contact us for details. Online theory is available in 53 different languages Can I dive after flying? Or fly after diving?You must wait 12–24 hours after diving before flying to avoid decompression sickness risks What is the water temperature and visibility? Summer: 20–24°C (3mm–5mm wetsuit)  Winter: 15–18°C (5mm–7mm wetsuit or drysuit)  Visibility ranges from 10 to 25 metres, depending on conditions. What’s the difference between boat diving and shore diving?Boat dives offer access to deeper sites like the Ex-HMAS Adelaide.Shore dives (like The Haven) are easier and ideal for beginners. Are there package deals or discounts? Yes—seasonal specials, group rates, and multi-course discounts are available. Ask our staff or check our website. How do I book? Book online via our website, call us directly, or visit our dive shop in Killarney Vale. Weather & Cancellations What happens if the weather is bad? Should weather cause delays, cancellations or other concerns, we will reschedule to an alternate date. Please see our refund/ cancellation policy Can dives be rescheduled? Yes, provided adequate time is given, please see our transfer policy Advanced / Technical Diving Do you offer technical diving or rebreather courses? Try SCR DivingXR Advanced Wreck XR Foundations  XR Nitrox Decompression diving Extended range diver Gas Blender Technical Extended range Can I do a Nitrox course with you? Nitrox courses are held every month, see website for booking dates Can I buy scuba equipment from you?Yes! Our retail shop stocks a wide range of scuba diving equipment and accessories from trusted brands such as Mares, Cressi, Scubapro, TUSA, Aqualung, and more. We also offer servicing and repairs. Do you offer dive travel or trips outside the Central Coast?Yes, we frequently organise trips to other Australian destinations such as Jervis Bay seal and whale dives- South West Rocks, Fish Rock cave- Forster, Seals Rock and the Solitary Islands around North west island and Anenome Bay. International dive travelOverseas Travel is offered at least twice each year to international destinations like, Solomon Islands, Vanuatu, Indonesia, Philippines and other South Pacific tropical nations Is parking available at your dive centre?Yes. Free on-site customer parking is available directly outside our dive centre for your convenience.  

XR stands for “Extended Range.” XR diving or technical diving expands beyond standard recreational diving limits by using advanced equipment, gases, planning techniques, and decompression procedures.

This checklist is designed to help you safely ease back into diving after a long layoff.

NSW Boat Licence – Frequently Asked Questions Who needs a boat licence in NSW? If you plan to operate a powered recreational vessel that can travel at 10 knots (18.5 km/h) or more, you are legally required to hold a General Boat Licence in NSW. This includes vessels such as tinnies, bowriders, runabouts, and larger motorboats. Note: Even if you're not travelling at high speed, if the vessel is capable of reaching 10 knots, you need a licence. What is the minimum age to apply for a licence? You can apply for a boat licence from 12 years of age. However, applicants aged 12 to under 16 are issued a Young Adult Boat Licence, which includes restrictions such as: No driving a boat at more than 20 knots No towing of people (e.g. waterskiing) Must be under the supervision of a fully licensed adult when operating the vessel What types of boat licences are available? There are three types of licences in NSW: General Boat Licence – For operating any powered recreational vessel at 10 knots or more PWC Licence – Required to drive a Personal Watercraft (jet ski) Combined Boat + PWC Licence – A dual licence that covers both vessel types You can choose to upgrade or combine your licence at any time through Service NSW. What does the boat licence course include? Our course is designed to help you pass the official test and feel confident on the water. It includes: A structured theory session explaining navigation rules, weather, speed limits, safety gear, and emergency procedures The official multiple-choice licence test, conducted in class Detailed instruction on how to complete the logbook, if you choose the supervised practice route Access to qualified trainers with real-world boating experience Is there a practical test required? There is no formal “on-water test” like driving a car. However, if you are not completing practical training through an RTO (Registered Training Organisation), you will need to: Complete 3 supervised boating trips, recorded in a practical boating logbook Be accompanied by someone who has held a General Boat Licence for at least 3 years PWC (jet ski) applicants do not need to complete a logbook or practical component. What do I need to bring on course day? To ensure you're ready and eligible to complete the course and test, please bring: Valid Photo ID (100 points, e.g. driver’s licence, passport, Medicare card) A pen and notebook (for taking notes) Any pre-course study material we’ve emailed you Comfortable clothes and water bottle (some courses are half-day or longer) How do I get the logbook? You can obtain your official NSW Boating Practical Logbook in any of the following ways: Download it from the Service NSW website Pick up a printed copy at your course Visit any Service NSW Service Centre The logbook is completely free and can be completed at your own pace. Who can supervise my logbook trips? To record valid logbook trips, your supervisor must: Hold a current NSW General Boat Licence Have held that licence continuously for 3 or more years Be present on board with you during the trip Friends, family, or colleagues can supervise as long as they meet the above requirements. How long is the logbook valid? The logbook must be completed and submitted to Service NSW within 12 months of your final trip. You can spread the three required trips across this time period at your convenience. Trips must be recorded accurately and signed off by your supervising skipper. Where do I get the licence once I’ve finished? Once you've: Passed the course Completed the logbook (if applicable) Take both documents to your nearest Service NSW Centre. You’ll need to present: Your Course Completion Certificate Your completed and signed logbook You’ll then pay the licence fee and be issued your NSW Boat Licence—no further testing is required. How long does the licence last? NSW boat licences are available in durations of: 1 year 3 years 5 years You can renew or extend your licence at any time through Service NSW. What does the licence cost? Licence fees are determined by Transport for NSW and vary depending on duration and whether you're applying for a General, PWC, or Combined licence.Check current pricing here Concession rates are available for eligible applicants. Can I get both the Boat & PWC licence together? Yes. If you plan to operate both a powered boat and a personal watercraft (jet ski), it’s more convenient and cost-effective to apply for a combined Boat + PWC licence.You only need to: Complete the combined course Sit both tests (theory is similar with PWC-specific additions) Pay the combined licence fee Still have questions? We’re here to help. You can:Call us directly for a chat on 02 43893483Send an online enquiry through our contact pageVisit our training centre to speak to a real person Our team is friendly, experienced, and happy to guide you through the process from start to finish.

Many people are fascinated by scuba diving but have understandable concerns about safety before taking their first breath underwater. The good news is that scuba diving is a highly structured activity with internationally recognised training standards, modern equipment, and proven safety procedures.

Can I Dive Anywhere in the World Afterwards? 20 Frequently Asked Questions About Using Your Scuba Certification Around the World One of the greatest benefits of becoming a certified scuba diver with Central Coast Divers is the freedom to explore some of the most incredible underwater destinations on Earth. From tropical coral reefs and colourful fish to historic shipwrecks and encounters with sharks, rays, turtles, and whales, your scuba certification opens the door to a lifetime of adventure. Here are the answers to the most common questions about diving around the world after certification. 1. Can I Dive Anywhere in the World After Becoming Certified? Yes. Your Open Water Diver certification is internationally recognised and accepted by dive centres, resorts, liveaboards, and dive operators throughout the world. 2. Is My Certification Recognised Internationally? Absolutely. SSI certifications are recognised globally and allow you to dive in virtually every major dive destination worldwide. 3. Can I Dive on the Great Barrier Reef? Yes. Your Open Water certification allows you to participate in guided dives on many parts of the Great Barrier Reef. Great Barrier Reef is one of the world's most famous diving destinations and is ideal for newly certified divers. 4. Can I Dive in Fiji? Yes. Fiji is renowned for warm water, soft corals, colourful reefs, and excellent visibility, making it a popular destination for newly certified divers. 5. Can I Dive in Papua New Guinea? Yes. Papua New Guinea offers spectacular reefs, wartime wrecks, and pristine marine environments. Some sites are suitable for beginners, while others require more experience. 6. Can I Dive in the Maldives? Yes. Maldives is famous for manta rays, whale sharks, and crystal-clear waters. Some dive sites have stronger currents and may require additional experience. 7. Can I Dive in Indonesia? Yes. Indonesia offers world-class diving destinations including Raja Ampat, Bali, and Komodo National Park. Many sites cater to both beginners and experienced divers. 8. Can I Dive in Thailand? Yes. Thailand is one of the world's most popular diving destinations for newly certified divers due to its warm water, affordable diving, and abundant marine life. 9. Can I Dive on Shipwrecks? Yes. Many recreational wrecks are suitable for Open Water Divers. More advanced wreck penetration or deep wreck diving may require additional training. 10. Can I Dive with Sharks? Yes. Many destinations offer safe and exciting shark encounters.Popular species include: Grey Nurse Sharks Reef Sharks Whale Sharks Hammerheads Shark diving is often one of the highlights of a diver's life. 11. Can I Dive with Manta Rays? Yes. Many tropical destinations provide opportunities to dive or snorkel with manta rays. These gentle giants are completely harmless to divers. 12. Are There Places I Cannot Dive? Some advanced sites have restrictions due to: Depth Strong currents Cave environments Technical diving requirements Additional training may be required for these locations. 13. Can I Dive Deeper Than 18 Metres? Not immediately. Open Water Divers are generally certified to a maximum depth of 18 metres. Further training allows deeper diving 14. What If a Dive Site Is Too Advanced for Me? Professional dive operators assess conditions and diver experience before every dive. If a site exceeds your certification or comfort level, alternative dives are usually available. 15. Do I Need a Guide Overseas? Many resorts and operators provide guided dives. Guided diving is highly recommended when visiting unfamiliar destinations. 16. Can I Rent Equipment Anywhere? Yes. Most dive centres worldwide offer rental equipment. You simply need proof of certification and may be asked about your recent diving experience. 17. What Documents Should I Take Travelling? Carry: Digital certification card Logbook Passport Dive insurance details Medical information if applicable Having these readily available makes travelling easier. 18. Do I Need Travel Insurance? Strongly recommended. Many divers purchase specialised dive travel insurance that includes: Medical evacuation Hyperbaric treatment Trip interruption Equipment coverage 19. Will I Need Additional Training for Some Destinations? Sometimes. Courses such as: Advanced Adventurer Enriched Air Nitrox Deep Diving Navigation can greatly expand your diving opportunities. 20. What Are the Best Places to Dive After Certification? Many newly certified divers enjoy destinations such as: Great Barrier Reef Fiji Papua New Guinea Maldives Indonesia Thailand Palau Egypt These destinations consistently rank among the world's best diving experiences. Explore the World Beneath the Surface Final Thoughts Your scuba certification is much more than a qualification—it is your passport to an entirely new world. Once certified, you can explore reefs, wrecks, walls, caves, and marine parks across the globe. Whether your dream is to dive the Great Barrier Reef, encounter manta rays in the Maldives, explore wartime wrecks in Papua New Guinea, or photograph vibrant coral reefs in Fiji, your underwater adventure is just beginning. Ready to Start Your Journey? The team at Central Coast Divers has been helping divers discover the underwater world since 1986. Learn Local. Dive Worldwide. Adventure Awaits.