Innovative Hybrid Drive Technology Powers KOTUG's Methanol-Powered Tugs

[By: SCHOTTEL]

SCHOTTEL is gearing up to deliver the world’s first large dual-fuel methanol escort tugs, designed specifically for KOTUG Canada. These innovative vessels, named SD Aisemaht and SD Qwiy Aanitsa Sarah, are being constructed at Sanmar Shipyards in Turkey and are set to launch in Q3 2025. Their primary role will be to assist crude oil tankers navigating from Vancouver’s outer harbor into the expansive Pacific Ocean through the Salish Sea’s busy shipping routes.

“We’re excited to roll out these eco-pleasant solutions as part of the Trans Mountain Expansion Project,” shares Laurens Korporaal, Business Progress Manager at KOTUG Canada. “these tugs showcase our commitment in British Columbia towards enhancing environmental standards in maritime operations while tackling both local and global ecological issues.”

The tugs boast an impressive bollard pull of 120 tonnes
To ensure optimal performance during their operations, these vessels are outfitted with a propulsion system that balances efficiency with power. Each tug features two SCHOTTEL rudderpropellers type SRP 710—these steerable units provide exceptional maneuverability alongside robust bollard pull capabilities. Additionally, they come equipped with SCHOTTEL TransverseThrusters type STT 170, allowing them to reach speeds of up to 14 knots while maintaining their status as Canada’s most powerful escort tugs.

SCHOTTEL SYDRIVE-M technology enhances fuel efficiency
Operating within the environmentally sensitive Salish Sea region means adhering to strict ecological standards. The propulsion system reflects this commitment: each vessel’s four azimuth thrusters incorporate SCHOTTEL SYDRIVE-M technology—a mechanical hybrid solution that enables one main engine to drive both thrusters concurrently.This setup not only cuts down on fuel consumption but also reduces maintenance costs by minimizing engine hours and emissions without needing extra electrical components. Moreover, both tugs feature a graphene paint coating on their hulls which helps prevent biofouling and improves smoothness—further boosting fuel efficiency while lowering underwater noise levels.