Marine engineering

Marine engineering

Protection and Management of Marine Lithium Battery Banks

Protection and Management of Marine Lithium Battery Banks

This article is part of a series dealing with building best-in-class lithium battery systems from bare cells, primarily for marine use, but a lot of this material finds relevance for low-voltage off-grid systems as well. This article discusses the protection of lithium battery banks in the context of marine installations. A previous article detailed the design […]

Electrical Design For a Marine Lithium Battery Bank

Electrical Design For a Marine Lithium Battery Bank

This article is part of a series dealing with building best-in-class lithium battery systems from bare cells, primarily for marine use, but a lot of this material finds relevance for low-voltage off-grid systems as well. Integrating a lithium battery bank on board a vessel introduces a few additional constraints and challenges that don’t exist with lead-acid […]

Assembling a Lithium Iron Phosphate Marine House Bank

Assembling a Lithium Iron Phosphate Marine House Bank

This article is part of a series dealing with building best-in-class lithium battery systems from bare cells, primarily for marine use, but a lot of this material finds relevance for low-voltage off-grid systems as well. Here, we detail the hands-on process of building a lithium battery bank from individual single prismatic cells. There is more to […]

Practical Characteristics of Lithium Iron Phosphate Battery Cells

Practical Characteristics of Lithium Iron Phosphate Battery Cells

This article is part of a series dealing with building best-in-class lithium battery systems from bare cells, primarily for marine use, but a lot of this material finds relevance for low-voltage off-grid systems as well. Batteries are about voltage, current and capacity first and foremost. This article discusses the performance characteristics of lithium iron phosphate cells […]

From Lead-Acid to Lithium: New Battery Technology for Power on Board

From Lead-Acid to Lithium: New Battery Technology for Power on Board

This article is part of a series dealing with building best-in-class lithium battery systems from bare cells, primarily for marine use, but a lot of this material finds relevance for low-voltage off-grid systems as well. The development and mass-manufacturing in recent years of large-size lithium-ion battery cells for electric vehicles and grid-tied electricity storage has made […]

Collision Avoidance at Sea: AIS Alarm Project

Collision Avoidance at Sea: AIS Alarm Project

AIS, for Automated Identification System, is probably the most remarkable safety improvement in decades for small craft offshore. The little project presented here involved designing and building a simple, very low power alarm system to keep an AIS watch at sea. Collision Avoidance at Sea Avoiding undesirable encounters with ships in mid-ocean has always been a […]

LED Lighting on Board

LED Lighting on Board

One of the largest technological differences between fitting out the sloop Yarra in the early 1990s and launching the Nordkyn design in 2010 was the transition from halogen to LED lighting. The performance and quality of LED lights was evolving so rapidly that I literally deferred purchasing light fittings until the last moment.The following sums […]

Engineering

Engineering

A certain amount of machining and engineering was involved in the construction. The machining of the rudder stock over one Easter weekend (when the workshop was deserted and quiet) was not documented, but a few other tasks were. Engineering tasks are great on a build like this. They provide a welcome break from fabrication and […]