July 12, 2021
Nichols Brothers Boat Builders (Ice flow LLC) delivered on Rachel Allen – the latest 100 ‘x 40’ ASD-90 tractor tug in a series of four vessels for Foss Maritime, a division of Saltchuk business.
NBBB completed and delivered the four 6,800 horsepower tugs, which includes the Jamie Anne, Sarah avrick and Leisa Florence, between April 2020 and June 2021. Two tugs will be stationed in Los Angeles / Long Beach, while the other two will be in San Francisco Bay to provide escort and assistance services to large tankers and container ships doing stopover in Californian ports.
ASD-90 class tugs are a Jensen Maritime Consultant design. Z-drive tractor tugs are built to US Coast Guard Subchapter M regulatory standards, with ABS load line certification and UWILD rating.
Shipyard officials said the new tugs were built to the most stringent emission requirements, with two MTU 16V4000M65L series main engines rated at 3,433 hp each, meet EPA Tier 4 standards, reducing particulate emissions with cylinder combustion technologies and nitrogen oxides emissions to near zero through to a selective catalytic reduction system.
The MTU SCR system offers engine optimization with improved efficiency, fuel consumption is reduced by 8% at full power and by 14-22% over a wider operating range compared to previous MTU engines in this power range . MTU and SCR engines are designed with an emphasis on noise reduction, standard features such as resilient mounting, turbocharger air intake mufflers and SCR insulation and noise reduction, all combined to produce noise levels throughout the ship without traditional exhaust mufflers. MTU engines are also equipped with MTU Go, a digital MTU monitoring system and service that allows continuous monitoring of the engines, including all engine parameters and alarms, with trends and broadcast of engine alarms through the engine. MTU Go application.
MTU 4000 series motors are associated with Kongsberg US255 azimuth thrusters. Azimuth thrusters are equipped with Health surveillance features allowing local and remote monitoring of thruster bearings and oil condition. The power package produces over 90 tonnes of bollard pull designed to give tugs exceptional pulling power and maneuverability.
The tugs are equipped with two Mackay Marine electronic and Markey machines winch packages. All four ships are fitted with a Markey DEPGF-52R-75HP forward winch for vessel assistance. Two of the vessels are fitted with a TESS-34AS-75HP rescue winch on the stern and two are fitted with a DEPC-32 barge handling winch on the stern.
The fourth tug, the Rachel Allen, will be the first tug in the United States to ship with the Sea machinery Autonomous SM300 system, including autonomy of transit as well as remote access to machinery on board the tug, allowing personnel to manage and support operations from anywhere on board the vessel or ashore. The technology capacity will be activated in phases over a six to nine month period to ensure full visibility and acceptance of all operational stakeholders.
Foss will use staff from its Fleet Monitoring Center to monitor the tug’s systems and operating area via streaming video and sensor data.
“The ASD-90 new build program produced three vessels for Foss and one vessel for our sister company, AmNav. They will meet the current and future needs of our customers’ larger vessels calling at California ports, ”said Will Roberts, president of Foss Maritime, in a statement announcing the delivery. “The tugs were built to meet the demands that we believe will soon be required from the rest of the country and the world. Foss prides itself on always providing our customers with safe and innovative solutions, and it’s another way to deliver on that promise. “
The NBBB and Foss team persevered despite the disruption caused by the Covid-19 outbreak and maintained a modified schedule, delivering all four ships during the global pandemic. In fact, the Jamie AnneThe first job was to help move the massive USNS naval hospital ship Pity as it left the Port of Los Angeles for its home port in San Diego in April 2020, followed by firefighting on the USS Bonhomme Richard.
“At the onset of the Covid pandemic, NBBB had to dramatically reorganize production to allow the necessary safety protocols to protect our workforce. NBBB responded quickly and while it certainly had a significant impact on production, we were able to keep working and never had a cross-infection at any of the facilities. Foss was an incredible team player, promoting the safety of our employees and our operations, ”said Gavin Higgins, CEO of NBBB. “I am very proud of the way our employees have responded to the pandemic and of their commitment as essential workers.”
“We are extremely grateful to Foss for trusting us with this four-vessel program,” said Tor Hovig, vice president of sales and customer relations for NBBB. “Foss continues to set new standards for the industry and we are proud to have delivered four of the most powerful tugs in its class, featuring the latest technology and environmental features. This program has supported many highly skilled jobs in this region, and it has been particularly rewarding to build for Foss as a local business, demonstrating the strength of the maritime industry in our region.