With several decades of experience aluminium is now regarded in the marine industry as the choice material for high seas vessel hull construction. Strength to weight ratio – Aluminum has superior strength to weight ratio which allows for building stronger and stiffer boats while keeping them light for performance. Stories of aluminum boats stranded on rocks or coral for days, absorbing blow after blow against their hull, denting —but not rupturing— and being towed to a yard where their damaged sections are cut away and replaced are not uncommon. Fire protection – In case of fire, aluminum does not burn in air nor will it support combustion. We have seen boats with galvanic corrosion problems due to electrolysis, or stainless steel direct contact with the aluminum. Environment – Aluminum is highly recyclable as it is estimated to require only 5% of the original energy needed to produce the metal.
Ada Yacht Construction company, are able to do turnkey steel or complete aluminum yacht building projects with also construction of steel tug boats, pilot boats and any other work boat building. Our VIP Yacht Charter department offers yacht charter activities from Marmaris, Bodrum, Fethiye, Gocek, Greek Islands, Cyprus, Istanbul and all Aegean and Mediterranean sea. We, as Ada Yacht, have very strong connections with second hand yacht owners, as a result we provide the best yacht brokerage service with a large list of new and used second hand motor boats for sale, motor yachts for sale, mega yachts, Turkish gulets for sale, sailing yachts and catamarans for sale. Ada Yacht operates mainly in custom steel boat building and aluminum yacht building sector in Turkey since 1981. Ada Yacht has been building steel hull boats, aluminum superstructure motor-yachts or complete aluminum boats, steel trawlers, steel gulets, steel or fully aluminum pilot boats, crew boats and work boats for more than 34 years. Ada Yacht has been building many types of vessels with different optional equipments and size like: Mooring Boat, MotorBarge, TugBoat, Fast Aluminum Workboat, High Speed Patrol Boats, Jack Up Platforms, Crew Boat, Multitug, Fishing Boats, Pusher Boat, Dredgers, Fish Farm Boats, Steel Utility Boat and Agent Supply Vessels. We, as a steel boat builder, are aware that the quality of the work is dependent on good workmanship and materials used in the construction of boats.
With our deep knowledge in steel yacht building sector in many years, we also produce any types of steel construction solutions to our customers. Ada Yacht has been providing full range of yacht related services in terms of yacht building, yacht brokerage and yacht sales, yacht charter and blue cruise to its clients since 1981. On the interior the transom has been refabricated and reinforced with an aluminum support brace. The remaining holes are for the engine mounts and bolts that fasten the marine plywood to the aluminum transom fastened in the interior. Although I am keenly interested in suggestions on what materials or process can be used to make this right. Without knowing the extend, and cause of the holes, simply filling in with weld shall just delay the inevitable. Remove the temporary fasteners and blocks, then drill out each hole with a slightly bigger bit, all the way through the skin and new core. I am really a novice DIY person without many of the skills required to repair the transom including welding. I should also mention the interior portion of the transom has been fabricated with an aluminum support brace welded to the aluminum runners along the floor length of the boat and vertically up the interior transom skin.

Agreed the best option would be to replace the exterior transom skin with a new piece of aluminum. That being said I 'think' my best option is to repair the holes from the outside transom skin.
Location: Eustis, FL A single thin skin of aluminum isn't going to support your engine, even with braces.
Location: Eustis, FL Wow, some really serious Mickey Mouse work going on there. When making potentially dangerous or financial decisions, always employ and consult appropriate professionals.
Its exceptional lightness, rigidity, resistance to puncture, and durability translate for the owner sailor in performance, lower cost of ownership, and above all higher security. Aluminum sail yacht construction exhibits 50-60% weight savings for equivalent strength and stiffness compared with steel vessel.
In such instances, a fiberglass or plastic boat would be totally damaged and lost in a matter of couple hours. It will not rot, soften, loose its strength properties, suffer delaminating, blistering, leaks, and problems associated with structural fatigue or decay with time.
In several tests, aluminum received the highest ratings for resisting flame spread, not being ignitable under atmospheric conditions, and not supporting flame spread.
Aluminum has been used in the marine industry for decades has shown very good corrosion and fatigue resistance. One instance was at the engine exhaust stainless steel pipe which was not properly insulated from the hull.
We have several instances where owners sold their used boat for the same amount they had paid brand new. Still, because of its low maintenance and very long durability, and aluminum sailboat is unlikely to be scrapped. The company added yacht charter and yacht brokerage departments to its body in the year 2001. As a steel and aluminum construction subconstructor of these mega yachts, we work under the supervision of foundations in the international marine sector such as ABS, Lloyds, GL, BV, RINA and internationally accepted principals and standards such as MCA, SOLAS, IMO and MARPOL. These mostly are steel factory buildings, steel industrial buildings, airplane hangars, indoor sports complex, steel hangars and steel construction factory and depots. But looking at your transom you have so many, the better option is to replace the transom, that way you'll know what the thickness is and it shall last longer than any temp repair which you're attempting now. You'll still have a transom full of holes, but they'll be sealed reasonably well, you can do it in your driveway and if you don't drop a 150 HP engine on it, you'll likely be fine for a decade with minimum care and a few decades with reasonable care.
If you think this transom is just in need of some holes being patched, I've got nothing more I can tell you. Resistance to puncture due to sudden impacts with containers is crucial for safety at sea, and a metal hull is often the only reasonable safety choice for ocean going vessels. There have been many aluminum sailboats built in the French and other parts of the world’s marine industry, and none of them have been retired due to corrosion alone.

Our boats are built with extra care in keeping all stainless steel parts isolated from the aluminum. The low maintenance of aluminum will actually greatly mitigate the environmental impact, as there is no sandblasting or discharge of volatile organic compounds (VOC).
Besides steel and aluminium boat construction, we also offer second hand boat sales.Here, our customers may find second hand traditional wooden Turkish gullets for sale and second hand yachts for sale in Turkey. We also construct fully aluminum pilot boats, which our customers need fast operation for their business.
Considering all the holes and the cutout, a lot of work, but something that can be done in your driveway.
Let this dry, until just barely tacky, then fill each hole with more of the thickened mixture. If unpainted, it will build a protective “patine”, and can be polished once in a while anywhere in the world at low cost. Our designs keep stainless steel or non-neutral materials and parts to the very minimum required.
In our yacht charter department, we offer gulets for hire and boats for rent in Turkey and Aegean Sea. High end paint finish will last and keep its looks for many years, and should it be redone, it can be at reasonable cost.
In fact experts remain unable to estimate the final lifetime of aluminum structures in a marine environment, and they consider that an aluminum structure will last forever. Our electrical DC and AC installations are done according to the state of the art and rules of the classifications bureaus, which dictate that no current will ever flow in the structure. That is on the transom to disc, from the outside and from the disc to the transom on the inside.
On the inside use your gloved finger, around the edges of the plywood and make a small fillet of the epoxy ooze out.
The repair of an aluminum vessel does not pose any specific problems can be done in many places of the world.
That includes full bi-polar wiring with high marine quality H07 RN-F electric wires of extreme insulation resistance, and all precautions such as isolation transformers, accurate and reliable leak testers, and properly placed anode protections.
Even at an advanced state of corrosion due to careless isolation or electrical faults, once the problem has been identified, full aluminum repair with proper isolation can be done easily and at very reasonable costs. When you drill new holes for the engine mounts, bond them just like you did the other ones, making them at least 30% larger in diameter then the actual bolt shank clearance hole needs to be.

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