The most readily available battery chemistry options following the automotive industry are typically either Ni-rich NMC for energy density, range, and power or LFP for lifetime, cost, and safety. While both options have their advantages for maritime electrification, each has significant tradeoffs. However mid-nickel, single crystal NMC can be engineered to combine all the above attributes, particularly high thermal stability and long lifetime with high charge and discharge rates. This presentation will compare the fundamental mechanisms underlying NMC and LFP degradation and thermal instability, and show comparative data for mid-nickel, single crystal NMC. Future opportunities for mid-nickel NMC cathode materials will also be discussed, including recycled sourcing and further performance enhancements for maritime applications.