Emergency Towing Pennant Storage Drum | Controlled-Deployment Reel for Tankers

Product Specification

Emergency Towing Pennant Storage Drum | Controlled-Deployment Reel for Tankers

Product Overview

The emergency towing pennant storage drum is a deck-mounted storage and controlled-deployment reel used mainly in the aft emergency towing arrangement of tankers. It keeps the galvanized wire-rope towing pennant ready for payout and supports rapid deployment when the ship’s main power is unavailable. The drum is selected as part of a complete arrangement that also includes pick-up gear, fairlead, strongpoint, and chafing gear according to the approved vessel design.

Supplier references YT1000-A and YT2000-A are matched to ETA1000-W and ETA2000-W configurations for tankers from 20,000 DWT upward. The 1,000 kN and 2,000 kN values are system working-strength categories under the emergency towing arrangement, not a standalone SWL for the storage drum. Final drum capacity, towing pennant length, payout direction, damping or braking arrangement, operating method, and deck foundation loads should be confirmed from the approved GA drawing and class documentation.

Quick Specifications

• Product function: Towing pennant storage and controlled payout → keeps the aft emergency towing pennant ready for deployment; it is not a towing winch.
• Regulatory basis: SOLAS regulation II-1/3-4 and IMO Resolution MSC.35(63) → applicable to emergency towing arrangements on tankers of 20,000 DWT and above.
• Supplier configurations: ETA1000-W / ETA2000-W → selected according to vessel deadweight and approved emergency towing arrangement.
• System working strength: 1,000 kN / 2,000 kN → official IMO working-strength categories for the complete towing components, not the storage drum alone.
• Towing pennant reference: Ø65 mm 6×37 IWR galvanized / Ø80 mm 8×37 IWR galvanized → final construction, length, termination, and certificate scope require confirmation.
• Storage drum reference: YT1000-A / YT2000-A → drum capacity must match the approved pennant diameter and required deployed length.
• Deployment requirement: Aft arrangement should be pre-rigged and capable of controlled deployment without main power → drum operation and pick-up gear interface must support the approved deployment procedure.
• Installation basis: Deck space, payout lead, foundation, reinforcement, access, and maintenance clearance → to be checked against the vessel arrangement before production.

Main Technical Parameters

Selection & Inquiry Guide

Step 1: Confirm vessel type, deadweight, construction date, and whether the drum is for the aft pre-rigged emergency towing arrangement, newbuilding, or retrofit.

Step 2: Confirm ETA1000-W or ETA2000-W system category and provide the approved emergency towing arrangement drawing or class-approved component list.

Step 3: Confirm towing pennant diameter, wire construction, galvanized finish, minimum required length, end termination, certificate, and storage condition.

Step 4: Confirm storage drum model, drum capacity, payout direction, manual winding arrangement, damping or braking device, force-reduction mechanism, and pick-up gear interface.

Step 5: Confirm deck installation space, foundation and reinforcement drawing, rope lead to the fairlead and strongpoint, maintenance access, coating system, and environmental requirement.

Step 6: Confirm quantity, classification society, inspection and test scope, documentation, delivery destination, Incoterms, and required delivery time.

Structure

Storage drum and flanges | Drum shaft and bearing supports | Manual winding / force-reduction arrangement | Controlled payout or damping device, if specified | Pennant guide interface | Deck foundation interface | Pick-up gear connection arrangement

Deployment, Installation & Quality Advantages

• The storage drum keeps the towing pennant organized and ready for controlled payout, reducing preparation time during an emergency.
• The drum capacity should be verified against both pennant diameter and the project-specific pennant length; diameter alone is not sufficient for drum selection.
• A damping or braking arrangement can limit uncontrolled drum acceleration during payout when included in the approved design; the exact device and setting require drawing confirmation.
• Manual winding or force-reduction features can assist crew during recovery and re-stowage, but the required operating force and number of operators should be confirmed by test or approved documentation.
• The towing load path should be carried by the approved strongpoint and associated chafing gear or chain stopper. The storage drum should not be assumed to act as a towing winch or primary strongpoint unless the approved design specifically states this.
• Deck foundation loads, reinforcement, rope lead, access, drainage, and corrosion protection should be reviewed together with the shipyard or vessel design office before installation.
• Inspection access around the shaft, bearings, locking parts, and payout path supports periodic maintenance and readiness checks required for emergency equipment.

Custom Attributes

• Regulatory Basis: SOLAS II-1/3-4 and IMO Resolution MSC.35(63) → design approval and prototype testing are subject to the Administration and project class requirements.
• Supplier Configuration: ETA1000-W / ETA2000-W → manufacturer-specific references, not IMO type designations.
• System Working Strength: 1,000 kN / 2,000 kN → selected by tanker deadweight; official IMO wording is working strength.
• Storage Drum Model: YT1000-A / YT2000-A → final dimensions and storage capacity to be confirmed by GA drawing.
• Towing Pennant: Ø65 mm 6×37 IWR / Ø80 mm 8×37 IWR galvanized wire rope → length and termination follow the approved arrangement.
• Operation: Controlled payout with manual recovery assistance → damping, brake, locking, and operating details to be confirmed.
• Installation: Deck mounted within the aft emergency towing arrangement → foundation and local deck reinforcement follow vessel drawings.
• Surface Treatment: Marine coating system to be confirmed → blasting grade, primer, final coating, and stainless-steel parts, if any, should follow the project specification.
• Certificate Requirement: Available according to approved order scope → class certificate, material certificate, wire-rope certificate, test report, and maker documentation should be specified before quotation.

How It Works

Crew prepares the pre-rigged aft arrangement → Pick-up gear is deployed to the towing vessel → Towing pennant pays out from the storage drum in a controlled manner → Pennant and chafing gear follow the approved fairlead path → Towing load is transferred to the approved strongpoint → Drum is inspected and the pennant is re-stowed after use or drill

Applications

Oil tankers | Chemical tankers | Gas carriers | Tankers of 20,000 DWT and above | Aft emergency towing arrangements | Newbuilding projects | Retrofit and replacement projects

Certifications & Advantages

Inspection, documentation, and class certification can be arranged according to the approved emergency towing arrangement, order scope, Administration requirement, and classification society survey procedure. The storage drum should not be described as independently type-approved unless a valid product or system certificate is provided.

Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate.

Drawing & Photos

FAQ

Q1: Are the 1,000 kN and 2,000 kN values the SWL of the storage drum?

A1: No. These values are the working-strength categories for the strength-rated components of the complete emergency towing arrangement. The storage drum mainly stores and controls payout of the towing pennant. Its structural and foundation loads must be confirmed by the approved design.

Q2: How is the required towing pennant length determined?

A2: IMO Resolution MSC.35(63) states that the towing pennant should be at least twice the lightest seagoing ballast freeboard at the fairlead plus 50 m. The final length and drum capacity should be confirmed from the vessel-specific arrangement.

Q3: What information is required before quotation?

A3: Provide vessel DWT, ETA configuration, approved GA or component list, pennant diameter and length, payout direction, drum capacity, operating and damping requirements, foundation drawing, coating system, class requirement, quantity, destination, and delivery time.