Propeller Boss Cap Fins (PBCF)

Overview

PBCF eliminates the hub vortex behind the propeller boss, reducing rotational energy loss in the propeller wake, optimizing the flow field to decrease appendage resistance, and enhancing propeller cavitation performance. A proven, low-cost retrofit with fast ROI and a payback period of 3–12 months.

How It Works

1. 1Specialized fins are integrated into the propeller boss cap, directly addressing the hub vortex that forms behind the propeller.
2. 2By disrupting and weakening the hub vortex, the fins recover rotational energy that would otherwise be lost in the propeller wake.
3. 3The optimized flow field reduces appendage resistance and enhances cavitation performance, delivering consistent fuel savings.
4. 4The retrofit is low-cost with a typical payback period of 3–12 months, making it one of the fastest-ROI ESD options available.

Key Benefits

• ✓Reducing rotational energy loss in propeller wake
• ✓Optimizing flow field to decrease appendage resistance
• ✓Enhancing propeller cavitation performance
• ✓Payback period of 3–12 months

Applicable Vessel Types

• ▸28,400 DWT MPV
• ▸32,000–82,000 DWT Bulk Carriers
• ▸174,000–208,000 DWT Newcastle Carriers
• ▸19,700–21,000 DWT Chemical Tankers
• ▸50,000 DWT MR Chemical Tanker
• ▸105,000–108,000 DWT Aframax Tankers
• ▸1,000–4,800 TEU Container Ships
• ▸2,000 CEU PCTC
• ▸4,900–6,300 PCTC
• ▸38,000–60,000 CBM LPG

Specifications

Fuel Saving

0.5–2%

Payback Period

3–12 months

Delivery Cycle

2–3 months

Class Approval

DNV, ABS, CCS, RINA, LR

FAQ