Step 1: Anchor "Basic Operational Conditions" – First Define "Where to Use" and "What to Lift" for Offshore Floating Cranes
- Clarify the operational water area: Prioritize confirming whether it is inland water (e.g., Yangtze River, canals) or deep sea (e.g., offshore wind power zones). Record key parameters simultaneously (for inland water, check the minimum water depth and width of the waterway; for deep sea, check the annual wind-wave level and water depth). This is the core prerequisite for distinguishing between inland water and deep-sea floating cranes.
- Identify the objects to be lifted: Determine the core information of the heavy objects to be lifted – weight (e.g., 300-ton steel box girders, 600-ton offshore wind turbine towers), dimensions, and material (whether anti-collision protection is required). Avoid incorrect selection of offshore cranes due to mismatched tonnage or operational needs.
Step 2: Focus on "Core Performance Requirements" – Then Define "What Capabilities Are Needed"
- Match lifting performance: Select the tonnage based on the weight of the heavy objects (50-800 tons for inland water floating cranes, hundreds to thousands of tons for deep-sea marine cranes). At the same time, confirm the operating radius (e.g., narrow inland waterways require flexible operation with a small radius, while open deep-sea areas require a large coverage range).
- Clarify mobility and stability control requirements: If the operation site is fixed (e.g., inland water ports), non-self-propelled floating cranes can be selected; if cross-regional movement is required (e.g., multi-point operations for offshore wind power), self-propelled floating cranes with DP (Dynamic Positioning) systems are a must. For areas with strong winds and waves, additional confirmation of wind resistance level is needed (deep-sea floating cranes must resist at least Beaufort Scale 10 winds).
Step 3: Check "Adaptation Risks and Additional Requirements" – Finally Ensure "No Omissions"
Eliminate environmental adaptation risks: For inland water, confirm that the draft of the cargo transfer crane is less than the minimum water level of the waterway (to avoid grounding); for deep sea, confirm the hull's anti-corrosion level (to resist seawater corrosion) and the equipment's salt spray resistance.
Clarify additional requirements: Confirm whether supporting lifting tools are needed (e.g., bulk cargo grabs, heavy-duty hooks) and whether 24/7 continuous operation is required (which affects the equipment's endurance configuration) to ensure full coverage of requirements.
Through the above 3 steps, you can break down requirements step by step from basic conditions to detailed needs, quickly transitioning from "not knowing what to choose" to "accurately identifying the equipment type" and avoiding incorrect selection of offshore cranes due to vague requirements.
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