Glomex Stainless Steel Whip VHF Antenna Kit - Only £49.95 - Force 4 Chandlery
i've got one of these on my 6.2m and got to say it's lasted well after i replaced my fibreglass one that had cracked (again).
I took some time researching before i bought it and have been impressed with it's performance bearing in mind it's only fairly short (3db gain).
I can hear Portland when on the trailer in the middle of the New Forest (Lyndhurst) which is good enough for me. Having been a mate in the merchant navy, i've been spoilt with vhf aerials with a height of over 200ft above sea level and some serious vhf kit. Bottom line is you're only going to get a range of line of sight (unless you have some strange atmospheric anomalies going on) on big ships about 25 miles. On the rib, aerial survival is more important than range for me (i want it to work when i use it even if it isn't the ultimate in range). Even on my bigger Sunseeker i switched to these stainless steel ones as i've got fed up replacing the 2m 'ish fibreglass ones every year and for me it's made very little difference in range. Good news is it's giving good reception on the stereo as well, as i have a splitter attached in line, and the ais seems to work fine to.
(i had to buy longer cable as the one supplied with the kit was too short and the glomex adaptor to fit to the swivel bracket that was already fitted to the rib and sun seeker) it comes with 3 different types of mounting bracket which is quite handy, plus all the plugs etc. I was looking for the similar Pacific one at the time but couldn't find one, but is probably just as good on a rib)