Mercury 115 HP SeaPro Electric Start, Steering, Trim and Tilt, CT Long Shaft Outboard Motor

The Mercury FourStroke 115 L CT SeaPro is a 4-stroke outboard marine engine designed for commercial fishing boats, rental tour boats, water taxis, and high-usage vessels that require a long shaft, featuring 115 HP / 86 kW and a 2064 cc 4-cylinder engine. Thanks to its Command Thrust (CT) gearcase system, it has the large gearcase and gearbox of a higher-tier engine block. The SeaPro series is a Mercury series specially developed for commercial and heavy-duty outboard engines. Increased durability, Smart Craft integration, and long service intervals are optimized to meet the needs of commercial operators.

FourStroke 115 L CT SeaPro Series Features and Technology Advantages

SeaPro engines aim for a long lifespan in saltwater environments with a reinforced cooling system and increased anode protection compared to standard FourStroke series. The Smart Craft gauge system allows for fleet-specific engine monitoring.

• 4-Cylinder Engine (2064 cc): SeaPro engines aim for a long lifespan in saltwater environments with a reinforced cooling system and increased anode protection compared to standard FourStroke series.
• Long Shaft (508 mm (20")): The propeller operates at optimum depth with the correct transom height.
• SeaPro Durability Package: Reinforced cooling, increased anode protection, and long service intervals.
• Command Thrust (CT) Gearcase: The large gearcase and gearbox of a higher-tier engine block — high torque at low RPM and strong thrust capacity.
• Electric Start: Instant activation with a key or button — comfortable and quick starting.
• Power Trim & Tilt: Adjusting the trim angle with a button while cruising — fuel efficiency optimization; full motor lift with tilt.
• External Fuel System with Float: Connection for a large capacity external tank — range determined by user need.

Long Shaft — Which Boat Type Is It Suitable For?

A long shaft (508 mm (20")) is suitable for the vast majority of inflatable boats, aluminum boats, and fiberglass boat models. For boats with a transom height of 381 mm, a short shaft model should be preferred.

Technical Specifications

Who Is This Engine For?

• Commercial fishing and tour boats: SeaPro's increased durability for intensive daily use.
• Water taxis and rental boats: low maintenance costs and long service intervals.
• Search and rescue and patrol boats: reliable power and Smart Craft engine monitoring.
• Coastal fishing fleet-specific: standard comparative performance and durability.

Maintenance and Longevity

4-stroke Mercury engines operate trouble-free for many years with regular oil changes and end-of-season maintenance protocols. The impeller of the water-cooled system should be checked every 100 hours or every two seasons. In saltwater use, freshwater flushing is mandatory after each use.

Related maintenance categories: Maintenance Kit | Engine Oil | Impeller | Mercury Spare Parts

Frequently Asked Questions

Why is the Mercury SeaPro 115 HP recommended for commercial use?

The SeaPro series offers a reinforced cooling system and increased anode protection compared to standard FourStroke engines. Smart Craft integration facilitates fleet management and engine monitoring. Long service intervals reduce operational costs.

What does the Smart Craft system provide in SeaPro engines?

Smart Craft transmits engine status, fuel consumption, temperature, and hourly operation data to a digital display. In multi-engine configurations, each engine can be monitored separately. The early warning system prevents unexpected malfunctions.

What are the maintenance intervals for SeaPro engines?

SeaPro engines are designed for long service intervals. Oil changes should be performed according to manufacturer recommendations. In saltwater use, freshwater flushing after each use and end-of-season anode inspection are mandatory.

Which boat and brand models are compatible with the FourStroke 115 L CT SeaPro?

Mercury outboard motors are compatible with many fiberglass, aluminum, and inflatable boat models thanks to their universal transom clamp or transom mounting system. The only criteria are your boat's transom height of 508 mm (20") and the maximum engine power approved by the manufacturer. You can get compatibility confirmation from Clever Marin by sharing your boat model.

Related Products and Categories

• Mercury Outboard Motors
• Mercury Marine Products
• Mercury Spare Parts
• Mercury 75–150 HP FourStroke
• Mercury SeaPro Engines
• Outboard Motors
• Boat Engines
• Maintenance Kit
• Impeller
• Anode

Is It the Right Configuration for Your Boat?

Share your boat model, transom height, and intended use — let's together confirm the suitability of the Mercury FourStroke 115 L CT SeaPro engine for your boat and the correct shaft selection.