分数是本图鉴内的相对0–100分。用于浏览，不是工程规格。
简短问答
这类交通工具要看哪些本地机构或走廊规则？
先看本地视角中的型式认定、营运许可与枢纽——不要假定一份全球清单。
Is this a buying guide?
No. Tool-Lifes /vehicles is an educational atlas. It explains history, systems and culture without affiliate rankings.
Are the scores official?
No. The six scores are relative editorial 0–100 marks across the 48 types on this site.
Where do the photos come from?
Lead images resolve from Wikimedia Commons via Wikipedia titles on the English masters, with licences recorded on the credits page.
Why metric units?
Metric is the default. Regional notes (US customary, local brand culture) appear in culture and market chapters.
How is this different from a wiki article?
Each type gets seven fixed-depth chapters, comparable scores and cross-type labs — structured for browsing, not a single freeform page.
Tugboat的推进、结构、控制与安全在同一运行包线内耦合。先分清各系统名称与职责，便于故障模式与合规审查。
下方仪表为设计裕度、可维护性与人因的相对评分，用于同级平台比较。
系统
船体·舱室
就Tugboat而言，Deep, rounded hull with skeg aft protects propellers during close-quarter ship work. Fendering—tyres, rubber, or pneumatic—lines the bow for push contact.
主机·轴系
就Tugboat而言，High-power diesel gensets or direct-drive 发动机s turn Z-drives or Voith Schneider units for thrust in any azimuth. Bollard pull, not knot speed, sizes the tug.
舵桨·稳定
就Tugboat而言，Drum winches with constant-tension control manage hawser stretch on long tows; quick-release hooks cut line in emergencies.
航海·GMDSS
就Tugboat而言，Wing stations and 360° visibility let the master see the ship's bow and own fenders during pivot moves.
SOLAS安全
就Tugboat而言，Many harbour tugs carry monitor pumps rated Fi-Fi 1 for tanker escort contracts.
系泊
就Tugboat而言，Escort tugs use skeg fins and indirect mode to generate lateral force on tankers at transit speed.
相对量表
热点
就Tugboat而言，Z-drive seals
就Tugboat而言，Sterntube or azimuth seal leaks pollute harbours and reduce thrust alignment.
就Tugboat而言，Fender compression set
就Tugboat而言，Hard tyres or worn rubber transmit shock to hull plating.
就Tugboat而言，Towline chafe
就Tugboat而言，Eye splices fail at fairlead edges during long ocean tows.
就Tugboat而言，发动机 overspeed trip
就Tugboat而言，Prop ventilation during tight turns can overspeed unloaded 发动机s.
就Tugboat而言，Generator load share
就Tugboat而言，Azimuth tugs lose steering if one gen set drops offline unexpectedly.
材料
就Tugboat而言，High-tensile hawser
就Tugboat而言，Synthetic lines float and store less kinetic energy than wire on snap-back.
就Tugboat而言，Ni-Al bronze propellers
就Tugboat而言，Large-diameter props in nozzles maximize bollard pull per kW.
就Tugboat而言，Steel fender tyres
就Tugboat而言，Aircraft tyres on bow rails absorb impact energy cheaply.
就Tugboat而言，Marine-grade 5083 aluminum
就Tugboat而言，Superstructure weight savings improve response in harbour.
Keep exploring
More in 海运
集装箱船
运送全球贸易TEU箱的格栅货船。
综合 57 🚢邮轮
为航线体验而非点对点移民设计的海上度假村。
综合 47 ⛴️渡轮
连接海峡与岛屿的定期客货渡船。
综合 59 ⛵帆船
从小艇到远洋赛船的风驱动船体。
综合 53 🛟潜艇
以水下运行为设计前提的舰艇与科研平台。
综合 46 🛢️油轮
运送原油与成品油的液货船——全球能源贸易的液体脊梁。
综合 45 🛳️航空母舰
漂浮的机场——把海军航空力量投射到大洋。
综合 50 🧊破冰船
撞碎并压过冰层、打通极地与冬季航道的船舶。
综合 43 🚢散货船
Single-hold freighters for dry bulk — ore, coal, grain and cement — distinct from tankers and boxships.
综合 49