Ports and Maritime Engineering
Ports and Maritime Engineering
The discipline of ports and maritime engineering has been a key pillar at Magryn & Associates since its inception, delivering on projects such as:
- Design of maritime structures on the coast and river, including:
- Boat ramps.
We have undertaken hundreds of boat ramp designs around the coast and rivers of Australia for local governments and private clients, most in South Australia, but also in Victoria and New South Wales.
- Breakwater design.
Jetties (eg the new Whyalla Jetty)
- Marina design
- Pontoon facility design
- Wharves for large ships (to 100,000 DWT), including ship fending design generally.
- Boat ramps.
- Near shore hydrographic surveys, utilising our purpose-built jet ski.
- Asset management, including jetty/wharf inspections in accordance with the industry-recognised Wharf Structures Condition Assessment manual
- Channel design and management
- Dredging advice
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These critical coastal structures offer protection of coastline and structures from erosion and/or wave attack.
Breakwaters often accompany engineering designs for boat ramps or marinas, and protect moored or landing vessels.
We design coastal-engineered Jettys for recreational or commercial use. The design may incorporate a fender design to allow vessels, from small fishing boats to large bulk carries of 100,000 DWT or more, to berth.
Coastal Structure Inspection
Above and below the water line inspections of marine structures, assessment of condition and reporting. Underwater inspection is either undertaken by free diving or by professional dive teams using hookah.
Coastal Erosion and Flooding Assessment
- historical erosion
- ongoing coastal erosion
- susceptibility for flooding due to elevated water levels from:
- rising sea level
- storm surge
- wave effects
Coastal Process Investigation
Sand transport, currents, erosion and accretion of beaches and usually employs one of more of the following:
- hydrographic survey
- sediment sampling
- current measurement
- aerial photography, both historical and current
- wave measurement
Coastal engineering design for marines is undertaken in accordance with the Australian Standard AS3962, and covers both the conceptual and detailed design phases for boat mooring at coastal locations and takes into account:
- depth of water and the need for dredging
- wave climate and penetration
- pontoon design
- vehicle access and parking
- boat launching
- other effects, such as seaweed ingress and adjacent erosion
Off Shore structures
Offshore navigation aides to shipping, pipe outfalls or intakes or vessel anchor systems. Designed to handle the required applied loads and local environmental conditions, the designs comply with Australian Standard AS4997 and other relevant standards.
Underwater surveys of the seabed are often undertaken in conjunction with a land survey on the shore. Magryn & Associates brings a wealth of experience to the marine survey discipline, with a licenced surveyor and a purpose-modified jet-ski on hand to tackle all required seabed surveys.
These maybe required for particular aspects of coastal projects. The Magryn team has extensive experience across:
marine sediment sampling
ocean temperature measurement’
side scan sonar investigation of the seabed and profiling
Stormwater Outfalls on Beaches
This is a particularly complicated field thanks largely to:
- varying ocean water levels
- sand transport along the coast
- wave attack and erosion onto the outfall structure
- erosion of sand by water exiting from the outfall
- trapping of gross pollutants from the outfall
- prevention of vermin access to outfall pipework
Vessel Water Pump-out Stations
On the coast and in riverine systems vessel waste pump-out stations is another of our specialities and ensures that the pumping out and storage or disposal of waste from a vessel is carried out in an environmentally acceptable manner. The design of these stations includes:
- jetty structure design
- pump selection
- storage/disposal selection
Underwater Inspection Drone
Magryn’s underwater drone is used to increase our survey capability and safety. It is suited to a variety of salt and fresh water environments and can reduce the survey cost where a professional dive team may otherwise be required. The underwater drone is capable of operating at depths of up of 100m, taking 4H UHD videos and photos. Read more here
Want to know more?
If your organisation has a coastal engineering requirement we invite you contact us to discuss your requirements.
We are passionate about coastal engineering, and so would enjoy discussing your requirements.
Coastal Engineering FAQs
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What is Coastal Adaptation?
Coastal zones face increasing risk of inundation and erosion as a result of coastal hazards such as sea level rise and increased wind and wave climates. Adaptation planning is important in response to increasing risks. There are generally five categories of adaptation responses in the coastal zone:
- Avoidance – Avoid the impacts of coastal hazards by ensuring that assets are not placed in
areas that could be impacted in the future.
- Hold the line – Install protection infrastructure that reduces the impact of coastal hazards.
- Accommodate – Accept some degree of hazard and conduct limited intervention to manage the hazard.
- Managed retreat – Move assets away from areas that could be impacted by coastal hazards.
- Loss acceptance – Accept that coastal hazards will cause negative impacts on assets and services and when this occurs, they will not be replaced.
With rising sea levels and increasing storm events as a result of climate change, coastal adaptation planning is important for both new developments and existing buildings, to ensure resilience, safety and long-term sustainability.
Why does my new development require a coastal hazard risk assessment?
In order to obtain development approval for new developments that are on or near the coast in South Australia, Coastal Protection Board approval is required. Approval will only be given if the development is in line with the board’s policy, and minimises coastal impacts. An assessment of coastal hazards by a qualified coastal engineer is sometimes required to meet the board’s policy and ensure long-term sustainability of the development.
Further information can be found in the Coastal Protection Board policy document, link below:
How can I protect my beachfront property from coastal erosion?
Coastal erosion is a concern for beach houses because it can threaten their stability and lead to property damage or loss. Coastal erosion and recession can be caused by a combination of coastal processes, including wave action, storms and rising sea levels.
Magryn can assess your property and recommend specific adaptation measures based on the specific site characteristics, historical erosion and hazard risks. Common solutions include seawalls, sandbag groynes, and beach nourishment (adding sand to the beach to restore its natural profile and provide a buffer against erosion).
As an alternative to traditional hard protection measures such as rock seawalls, soft erosion protection such as landscaping that is sensitive to the coastal environment may also be a viable solution. We prioritise solutions that minimise environmental disruption and maintain beach amenity.
We work closely with relevant government agencies to ensure compliance.
Magryn can assist with the entire process from planning, approval, tendering through to construction of protection works.
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Civil, Structural, Mining, Coastal and Marine engineering.