To investigate the optimal assembly proportions of inner liners in Antarctic krill beam trawls and achieve the goal of green， low-carbon fishing， this study focuses on the beam trawl used by the Antarctic krill fishing and processing vessel "Deep Blue". The trawl model with a scaling ratio of 15 was developed based on the modified Tanaka criterion， and experiments were conducted in a circulating flume tank to investigate the effects of liner net proportions （100%， 90%， 80%） and sinker mass （0.5， 1.0， 1.5， 2.0 kg） on the overall geometry， drag， energy consumption coefficient， and stability of the beam trawl model. The results indicate： （1） A reduction in the liner net proportion led to decreases in drag and energy consumption coefficient， while the net mouth height remained relatively unchanged. Under identical conditions， a 20% reduction in liner net proportion resulted in a 12.02% decrease in drag and a 5.66% reduction in the energy consumption coefficient. （2） With increasing flow velocity， the beam trawl model exhibited a reduction in net mouth height， greater overall contraction and increased drag. （3） Increased sinker mass was positively correlated with drag， net mouth height， and energy consumption coefficient. （4） Reducing the liner net proportion while increasing sinker mass resulted in more stable resistance oscillations with reduced amplitude. Appropriately reducing the liner net ratio and increasing the sinker mass can help reduce trawl drag and energy consumption. This study provides foundational theoretical guidance for optimizing the design of beam trawl gear for Antarctic krill harvesting.