Cannons Marina’s Post

There are a lot of factors that go into Grady-White’s consistently world-class boats—everything from heritage and experience to a company culture of integrity and innovation. The outstanding reputation of Grady-White boats, especially their famously smooth ride, is owed to the patented SeaV2 hull design, which provides a distinct combination of a soft ride with sharp, dependable maneuverability, all while maintaining fuel efficiency. Here’s a brief breakdown of how the SeaV2 hull works. https://lnkd.in/egU4Rqae

There are a lot of factors that go into Grady-White’s consistently world-class boats—everything from heritage and experience to a company culture of integrity and innovation. The outstanding reputation of Grady-White boats, especially their famously smooth ride, is owed to the patented SeaV2 hull design, which provides a distinct combination of a soft ride with sharp, dependable maneuverability, all while maintaining fuel efficiency. Here's a brief breakdown of how the SeaV2 hull works. https://lnkd.in/egU4Rqae

There are a lot of factors that go into Grady-White’s consistently world-class boats—everything from heritage and experience to a company culture of integrity and innovation. The outstanding reputation of Grady-White boats, especially their famously smooth ride, is owed to the patented SeaV2 hull design, which provides a distinct combination of a soft ride with sharp, dependable maneuverability, all while maintaining fuel efficiency. Here’s a brief breakdown of how the SeaV2 hull works. https://lnkd.in/egU4Rqae

More recognition; 3 overwhelming reviews in 2 weeks, from BOATTEST.COM’s test-captains: “Shock-Absorbing Seats Both the helm and the companion seats on the Arksen 28 are shock-absorbing, spring-actuated seats that are one of the first we have encountered on boats of this type.” “The word “heavenly” comes to mind.” “The seats are a dream come true our test captain was ecstatic to have them. We have wondered for years why builders haven’t made shock-absorbing seats standard or optional equipment — and the answer is that consumers haven’t demanded them. (That is probably largely because they don’t know they exist.) Full marks to Arksen for installing them as standard equipment.” NEW TEST VIDEO. Thanks to a 24-degree deadrise at the transom and her remarkable shock-absorbing seats, the new Arksen 28 is the most comfortable boat in class we've ever tested. She's an aluminum-hull dayboat, with a fiberglass deck and superstructure, and is ready for adventure anytime, anyplace on earth.  Link to video: https://lnkd.in/enGxz7sv

9 m Aluminum Adventure & Sport Stepped Hull boat 1x 300 hp Architecture&Design Andrei Rochian ASSESMENT AND OPTIMISATION OF STABILITY of a 9-meter aluminum boat with a high speed of 50 knots and a stepped hull 1. Initial Design Analysis Hull Form Analysis: The stepped hull design affects hydrodynamics significantly, influencing both speed and stability. Understand the design specifics, including the location, number, and shape of the steps. Center of Gravity (CG) and Center of Buoyancy (CB): Calculate the CG and CB for different loading conditions. The stepped hull may alter the CG during high-speed runs due to dynamic lift generated by the steps. Metacentric Height (GM): Evaluate GM, which measures initial stability. GM should be sufficient to provide positive stability in all expected conditions but not so high that it leads to stiff and uncomfortable motions. 2. Hydrodynamic Simulations Computational Fluid Dynamics (CFD) Analysis: Use CFD to simulate how the stepped hull behaves at various speeds and sea states. Focus on dynamic stability aspects such as porpoising (bouncing), chine walking (side-to-side instability), and potential for bow steering. Dynamic Stability Testing: Evaluate dynamic stability characteristics such as running trim angles, heeling moments, and turning stability. Stepped hulls can experience sudden changes in stability due to re-entry impacts during wave encounters. 3. Weight Distribution and Loading Conditions Load Scenarios: Assess stability with different loading scenarios (crew positions, fuel, equipment). Stepped hulls are sensitive to changes in trim and load distribution. Ballast Adjustment: If necessary, adjust ballast or redistribute weight to maintain an optimal CG, especially during high-speed maneuvers. 4. Sea Trials and Physical Testing Inclining Test: Conduct an inclining experiment to determine the actual CG and GM under real conditions. This test helps validate the theoretical stability calculations. 5. Regulatory Compliance and Safety Standards ISO 12217-1: This standard for small craft stability and buoyancy is useful for boats under 24 meters. Ensure your boat meets or exceeds the relevant stability criteria outlined for high-speed craft. Safety Margins: Incorporate safety margins into the stability design, considering the possibility of unexpected weather or sea state changes. 6. Analysis of Dynamic Effects Porpoising and Chine Walking Analysis: Validate stability against dynamic instabilities like porpoising, where the bow repeatedly rises and falls, and chine walking, where the boat oscillates side-to-side. #AluminiumBoat #SportBoat #HighSpeed #gofast #bateaugofast #gofastsportboat #gofastboat #boatdesign #MetalDesign #bateaualumiunium #Hydrodynamics #SpeedBoat #AluminiumVessel

GREY POWER: "As this class of ship has grown in capacity (a new design has been approved that could carry up to 12,800 vehicles), it appears that the sort of evacuation systems designed for far smaller ships have merely been extrapolated to fit the larger vessels. The height of the accommodation above the multiple decks of the garage makes a free fall design of lifeboat impractical, while the extraordinary length of the falls necessary to launch a boat at such a height comes with its own problems, if the ship is moving in a seaway. "Designers seem to have largely ignored the difficulties. The fire problems were also tragically illustrated with a Ro-Ro ferry on fire in the Mediterranean some years ago, when the boats and rafts had been located directly above large natural ventilation apertures in the vehicle deck, out of which flames and smoke from blazing trucks were pouring. "It is regrettably the case that designers, if they ever look at such issues, beyond the scope of regulation, will tend to regard the positioning of LSA as something of an afterthought. While enormous efforts surround LSA on passenger ships, those aboard merchant ships, with their tiny crews, will probably not qualify for a great deal of attention in the design stage. It will be angrily denied, but there will be a certain unspoken calculation of the odds of serious accidents in designers' minds." Full article link in comments.

SEA STAR TILOS The Flagship of @tilostravelturkiye Sea Star Tilos is an SES Type Catamaran The Surface-Effect Ship (SES) technology combines the best features of hovercraft and catamaran hull design. Unlike a traditional hovercraft, an SES vessel does not rely on speed to rise out of the water. Even at a complete standstill, large fans create a cushion of air inside the enclosure formed between the twin hulls, which are sealed by flexible skirts at the bow and stern. Rubber finger-type seals at the bow and a bag seal at the stern maintain an airtight pocket. The SES concept is renowned for its high vessel speed, but its unique capabilities stem primarily from the combination of high speed and excellent seakeeping. This exceptional seakeeping is achieved through several key features: • The vessel is partly lifted out of the water, reducing the impact of wave motion. • The air cushion functions as a large shock absorber. • The motion control system (RCS) damps the vessel’s vertical motion. @tilostravelturkiye @makritravel @roditistours #fethiye2rhodes #highspeed #photooftheday

One of our favorite pieces of equipment? The Jumping Jack. 🤸 These vibratory rammers compact soil quickly and efficiently, sometimes capable of compacting up to 24”. The lightweight, compact design of the Jumping Jack works well in confined areas where our crews typically spend a lot of time.  Did you know the Jumping Jack first appeared in 1930? #ASRFleet #JumpingJack #ConcreteContractor

Achieving appropriate vehicular speeds through a roundabout is the most critical design objective. A well-designed roundabout reduces the relative speeds between conflicting traffic streams by requiring vehicles to negotiate the roundabout along a curved path. Increasing the curvature of the vehicle path decreases the relative speed between the entering and circulating vehicles. To determine the speed of a roundabout, the fastest path allowed by the geometry should be drawn. This is the smoothest, least-curved path that can be followed by a single vehicle, in the absence of other traffic and ignoring all lane markings, traversing the entry, around the central island, and out the exit. All proposed layouts should be checked against excessive vehicle speeds by ensuring that no vehicle paths of assumed width of 2.0, are on a radius greater than 100m

Key Takeaways about the Bow of a Boat: Table: Boat Terminology Bow Anatomy Types of Bows Types of Bow Designs The Role of the Bow in Boat Functionality The Role of Bow Materials Bow Construction Techniques Hydrodynamics and Wave Resistance Pushing the Boundaries of Technology The Importance of Bow Design for Ship Navigation Bow stability Boat speed Bow Materials Comparison When it comes to #bow