Shaft couplings, engine hold-downs, deck machinery, hull module joints, flanged piping, and the seized studs that stop all of it. We supply, rent, service and calibrate the torque and tensioning tools a shipyard actually uses — and through Mazzella, the shipboard lifting and rigging that goes with them. We're a drive away, not a freight quote away.
A shipyard is not one bolting problem. It is a dozen of them, in different clearances, with different documentation requirements, on different schedules. Here's how we map tools to them.
| Application | What it demands | What we put on it |
|---|---|---|
| Propeller shaft & rudder couplings | High, repeatable, verifiable preload in tight radial clearance | TorcUP low-clearance hex and square drive tools; TensionPro tensioners where the stud geometry allows; load verification before sign-off |
| Main engine & generator hold-downs | Even clamp load across a large pattern, limited overhead access | Multi-tool hydraulic setups off one pump, sequenced bolt-up, Skidmore verification of the torque-to-load relationship |
| Hull & module joints | Volume bolt-up on a schedule, tools that survive a real yard | Michigan Pneumatic and Ozat impact tooling, hydraulic torque for the critical patterns |
| Flanged piping systems | Controlled bolt-up, gasket seating, alignment before torque | Renquip flange spreaders and alignment gear, Petol lineup pins, PCC-1 informed torque sequences |
| Deck machinery & winches | Fasteners that stay tight under vibration and shock | Nord-Lock wedge-locking washers; Nord-Lock Expander System pivot pins for worn pin bores |
| Seized, snapped or galled studs | Removal without damaging the parent component | Nuova Simat ARES-500 portable EDM stud removal; Helios-35 portable induction heating |
| Hull section & module moves | Lifting and positioning where a crane can't reach or the pick is too big | Enerpac telescopic gantries to 1,178 tons, strand jacks, jack-up systems, low-height skidding and synchronous lifting — rent or purchase |
| Module and component lifts | Rated, inspected, documented rigging for heavy and awkward picks | Mazzella slings, wire rope, hoists and below-the-hook devices; rigging and crane inspection and operator training to OSHA and ASME standards |
| QA and turnover packages | Documented torque values, calibrated tools, traceable certificates | Calibration with certification on the tools we sell, rent and service |
TorcUP square drive and low-clearance hex cassette tools, pumps and hose. We are TorcUP's top representative in the United States, so pricing, lead time and factory engineering access all run through one call.
TensionPro standard and custom tensioners for joints where torque friction scatter is the enemy — large-diameter studs, critical preload, and patterns you need to load simultaneously.
Michigan Pneumatic heavy industrial air tools and Ozat impact sockets and accessories — for the volume work that doesn't justify a hydraulic setup but still has to survive the yard. Michigan Pneumatic builds for shipyards by name, and stocks one of the largest air tool parts inventories anywhere, which is what matters when a tool goes down mid-shift.
Skidmore-Wilhelm bolt tension calibrators to establish and prove the torque-to-load relationship for your fastener and lubricant — the difference between a torque value and a preload you can defend.
Renquip flange spreaders, alignment tools and Petol lineup pins — because a flange that isn't aligned won't seal no matter what you torque it to.
Nord-Lock wedge-locking washers for vibration, and the Nord-Lock Expander System for worn pivot pin bores on cranes, hatches and deck equipment — a repair instead of a re-bore.
Through Mazzella: shipboard crane and davit wires, mooring and tow lines, slings, hoists and below-the-hook devices — plus certified inspection, repair and training. See the shipboard list →
Enerpac gantries, strand jacks, jack-up systems, cube jacks, skidding systems and machine skates for hull sections, engine setting and module moves. See heavy lifting →
Through Mazzella — a leading independently-owned lifting and rigging provider — we cover shipboard rigging as well as bolting. These are the items yards and vessel owners actually order, not a generic catalog page.
And the compliance side: certified field techs for crane and rigging inspection to OSHA and ASME standards with written reports, sling and crane repair, on-site spooling and socketing, parts for all makes, and operator, rigging and signalperson training.
Air-driven hydraulic torque pumps in a marine environment ingest wet, salt-laden, oil-carrying shop air. Motors corrode from the inside, vanes stick, and the failure gets blamed on the tool. Marine Tuff is a hardened air treatment and conditioning module built specifically for that problem — filtration, water separation and lubrication sized for offshore and coastal duty, packaged to survive being dragged around a yard.
Why it matters on a bid: pump reliability is the single biggest driver of unplanned downtime on air-driven torque work. Fixing the air is cheaper than replacing the pump twice.
Pumps, square drives, low-clearance tools and tensioners out of Gonzales — for peak work, one-off jobs, or covering a tool that's in for service.
Rebuilds, seal kits, hose and coupler replacement, and troubleshooting on the tools you already own — whoever built them.
Calibration with certification, so tools in the QA package are documented and the paperwork doesn't come back.
Setup, procedure help and crew training at the yard. If a first-article joint has to go right, we're standing there for it.
Labor Day 2026. A rush shipment to a Mississippi yard missed its Saturday delivery. Rather than let a crew sit, we pulled a square drive tool out of our own rental fleet and drove it over from Baton Rouge on the holiday. That's the difference between a distributor and a neighbor.
Tell us the joints that give you trouble — sizes, access, documentation requirements, and what you're running today. We'll come back with a tool-by-application package, a rental option, and a service plan for what you already own.