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MER Commercial Marine Generators
Marine Generators Depot supplies MER Commercial Marine Generators, including the BOLLARD™ generator range engineered specifically for demanding commercial marine service. Unlike smaller pleasure-craft gensets, these commercial marine diesel generators are designed around the operating requirements of workboats, fishing vessels, tugboats, passenger vessels, research craft, and other professional vessels that depend on reliable auxiliary electrical power for extended operating periods. MER Equipment designs and builds its BOLLARD marine generator systems in the United States.
The BOLLARD marine generator lineup covers an unusually broad power range, with published models including 9kW, 12.5kW, 22kW, 28kW, 42kW, 50kW, 65kW, 99kW, 104kW, 122kW, 156kW, 210kW, 260kW, 315kW and 392kW marine generators. This gives operators options ranging from a relatively compact commercial boat generator to substantial auxiliary power systems for large working vessels and fleet applications.
MER BOLLARD generators are configured around commercial-duty diesel engines and heavy-duty generator ends, with current larger models using John Deere marine engines and Marathon motor-start alternators. For example, the 42kW and 50kW marine generators use John Deere 4045-series engines, while the 99kW commercial marine generator uses the John Deere 4045AFM85. Generator packages are calibrated and full-load tested before shipment according to MER’s published specifications.
Electrical flexibility is particularly important on commercial vessels. Selected BOLLARD systems offer single-phase configurations as well as 12-lead reconnectable three-phase marine generators, with 50Hz and 60Hz capability depending on the model. Their PMG excitation, automatic voltage regulation and available paralleling and load-sharing controls can make these marine gensets suitable for vessels operating motors, pumps, refrigeration, hydraulics and other substantial onboard electrical loads.
Cooling arrangements can also be matched to the vessel. MER offers configurations for keel-cooled marine generators, heat-exchanger cooling and marine radiator systems on selected BOLLARD models. This flexibility is valuable for commercial fishing boats, tugs, workboats and specialized vessels where operating environment, raw-water conditions and engine-room layout can influence the preferred cooling system. The 156kW model, for example, is published with keel-cooled, radiator or heat-exchanger options.
For marine generator replacement and repower projects, Marine Generators Depot can assist operators comparing an existing commercial genset with available MER BOLLARD alternatives. A replacement 28kW, 50kW, 99kW or 150kW marine generator should be evaluated using more than rated output; voltage, frequency, phase, motor-starting requirements, cooling configuration, dimensions, controls, exhaust system and available machinery-space should all be considered. MER also provides customizable frames, controls, sound enclosures, exhaust arrangements, power take-off systems and other vessel-specific options.
Whether the requirement is a 12.5kW workboat generator, 28kW fishing vessel generator, 50kW marine diesel genset, 99kW tugboat generator, 156kW auxiliary generator or a larger 300kW+ commercial marine generator, Marine Generators Depot can assist with BOLLARD model sourcing, electrical configuration, repower comparisons, cooling options, parts and worldwide supply for professional marine applications.










