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Shiphandling Mishaps and Lessons Learned. LT Hagee 02 Nov 00. Overview. FFG entering port grounding LSD unrep near collision T-AE unrep near collision Yukon/Denver collision Discussion (throughout). FFG Entering Port. FFG entering foreign port for bilateral ex Language barrier
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Shiphandling Mishaps and Lessons Learned LT Hagee 02 Nov 00
Overview • FFG entering port grounding • LSD unrep near collision • T-AE unrep near collision • Yukon/Denver collision • Discussion (throughout)
FFG Entering Port • FFG entering foreign port for bilateral ex • Language barrier • Diplomatic clearance delayed • 9 hour delay getting into port • Stationed Sea and Anchor • 1657: proceed to pilot pickup
FFG (cont) • Pilot boat skips them • Proceed out of channel • Sunset observed • Note: Avoid entering port later than 1700 • Made second approach • No pilot available • Permission not granted -- clear channel
FFG (cont) • CO/XO: Anchor outside the channel • CO went to CIC • XO (conn) maneuvered to port • Nav informed XO it was a different set of buoys -- standing into shoal water • XO disagrees -- full rudder turn to port
FFG (cont) • Ship ran aground • Sonar dome damaged • One propeller blade sheared
FFG - findings • Tripwire (NLT 1700) ignored • No one assumed responsibility of oversight • Language barrier anticipated? • Committed to channel w/out permission • Nav advised shoal water -- stop ship to investigate • LACK OF SUPERVISION --> MISHAP
LSD Near Collision • Conducting UNREP operations • Approach conducted 2 hours of approaches and breakaways (6) -- no lines • Ship approached -- dry hookup • Intent was to hookup again -- 50k gals fuel
LSD (cont) • Approach ship alternated helmsman • Conn passed to new Ensign • Dept Head OOD • Dept Head coach for Conning Officer • Qualified OOD was Helm Safety • CO and XO were both on the bridge
LSD (cont) • Maintained station 160-180 ft • Rudder: 5 deg, occasionally 10 deg • Rig was passed for final hookup • Permission to tension granted • Word passed “Standby to tension aft” • Spanwire not tensioned immediately
LSD (cont) • Rudder: • Right 15 deg • Moving toward amidships • Approaching amidships from >10 deg left • Past right 15 deg to right full • Conn coach: shift your rudder
LSD (cont) • CO assumed conn • Rudder amidships • Left standard rudder • Various combinations • Conn coach formally took the conn • Spanwire parted • 10-40 ft CPA at stern
LSD - findings • Helm/Safety Officer • Prematurely and erroneously compensated • Failed to maintain ordered course • Did not advise conning officer of situation • Helm Safety Officer • Did nothing to correct when helmsman lost ctrl • Helmsman unconfident due to overbearing nature of helm safety officer
LSD - findings • Confusion with regard to conn
T-AE Near Collision • Preparing for UNREP • 3 things noted prior to approach • Headed into sunrise (start was 0750) • Rigs 4 and 6 both well forward of pivot point • Noise level high due to simultaneous vertrep • Base cse: 080 • Using 081/082
T-AE (cont) • Ship approached 160 flag • Conn saw paddle signal to tension • On course 081 • Ordered 083 • Stations 4 and 6 stationed simultaneously • Ships closed to 120 feet w/in seconds
T-AE (cont) • Rudder: • Right 5 degrees • Right 10 degrees • Stabilized at 100 ft separation • Right 15 degrees rudder • Opened distance • Stern CPA of 60 feet
T-AE (cont) • Ships opened to 200 feet • Rudder amidships -- coasted to 300 feet • Weak links parted at 300 feet
T-AE - Findings • Conning officer unprepared for sudden tension • Highlines tensioned w/out permission
USNS YUKON (TAO 202) • Underway Replenishment Oiler • Henry. J Kaiser Class • Length: 650 ft • Beam: 97 ft • Draft: 35 ft • Displace: 40700 tons • Speed: 24 knots
USS DENVER (LPD 9) • Amphibious Transport Dock • Austin Class • Length: 570 ft • Beam: 100 ft • Draft: 23 ft • Displace: 17224 tons • Speed: 21 knots
DENVER vs YUKON • USS DENVER - BLUE SHIP - Approach Ship • USNS YUKON- RED SHIP • Delivery Ship • Guide • Steadies on Romeo Corpen & Speed
