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龙船客服 发表于 2024-7-15 20:43

BV NR584 Rules for azimuth thrusters in ice for polar class ships and icebreakers 2024-07

BV NR584 Rules for azimuth thrusters in ice for polar class ships and icebreakers 2024-07

smeri01 发表于 2025-2-12 18:41

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