The need to reduce emissions from marine diesel engines has driven the exploration of alternative fuels for commercial fishing vessels in the USA and Europe. Manufacturers are looking at options like methanol, LNG, and hydrogen to meet stringent emission standards. Elliott Bay Design Group in the US is seeking a grant with the American Bureau of Shipping to study the safety and viability of alternative fuels on fishing vessels. Challenges such as fuel bunkering, storage capacity, and safety have been highlighted, with hydrogen being noted for its requirement of large storage space. However, combining hydrogen with carriers like methanol or ammonia can potentially solve this issue. Various engine manufacturers are developing engines that can run on alternative fuels like methanol, with Caterpillar's 800-hp methanol dual-fuel engine set for testing in 2026. The integration of alternative fuels into fishing vessel construction faces hurdles like safety concerns and significant cost increases. Macduff Shipyards in Scotland estimates a 50 to 100% cost increase, but experiences suggest it could be higher. Despite these challenges, progress is being made in developing hybrid systems with decreasing costs. Initiatives like risk analysis workshops and partnerships aim to address safety and regulatory obstacles, with a focus on reducing fuel costs and emissions in the industry.